query-dd6a36169e7fa86b607719b17d356ecb

rq turtle/ttl

Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label Finds authors who have published scientific articles together,

but whose Erdos numbers are more than one apart.

These would appear to violate the definition of the Erdos number.

SELECT # Q#s ?paper ?author1 ?author2 # title (either from title statement or label) (IF(BOUND(?title), ?title, ?paperLabel) AS ?title) # author labels (should be names) and their Erdos numbers ?author1Label ?erdos1 ?author2Label ?erdos2 # distance between Erdos numbers ?distance WHERE { # paper, instance of or subclass of scientific article; also has two authors ?paper wdt:P31/wdt:P279 wd:Q13442814; wdt:P50 ?author1, ?author2. # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title OPTIONAL { ?paper wdt:P1476 ?title. } # grab Erdos numbers of the two authors ?author1 wdt:P2021 ?erdos1. ?author2 wdt:P2021 ?erdos2. # introduce a new variable for the difference of the Erdos numbers BIND(?erdos2 - ?erdos1 AS ?distance). # select those cases where the distance is > 1 # (note: by not taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped) FILTER(?distance > 1). # get Label variables automagically SERVICE wikibase:label { bd:serviceParam wikibase:language "en". } }

sort by distance first (descending), then by first author, then by second author

ORDER BY DESC(?distance) ?author1Label ?author2Label

Use at

• https://query.wikidata.org/sparql

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX bd: <http://www.bigdata.com/rdf#>
# Finds authors who have published scientific articles together,
# but whose Erdos numbers are more than one apart.
# These would appear to violate the definition of the Erdos number.

SELECT
  # Q#s
  ?paper
  ?author1
  ?author2
  # title (either from title statement or label)
  (IF(BOUND(?title), ?title, ?paperLabel) AS ?title)
  # author labels (should be names) and their Erdos numbers
  ?author1Label
  ?erdos1
  ?author2Label
  ?erdos2
  # distance between Erdos numbers
  ?distance
WHERE
{
  # paper, instance of or subclass of scientific article; also has two authors
  ?paper wdt:P31/wdt:P279* wd:Q13442814;
           wdt:P50 ?author1, ?author2.
  # if it has a title, we’ll grab that as well, but it’s also okay if there’s no title
  OPTIONAL { ?paper wdt:P1476 ?title. }
  # grab Erdos numbers of the two authors
  ?author1 wdt:P2021 ?erdos1.
  ?author2 wdt:P2021 ?erdos2.
  # introduce a new variable for the difference of the Erdos numbers
  BIND(?erdos2 - ?erdos1 AS ?distance).
  # select those cases where the distance is > 1
  # (note: by *not* taking the absolute value of the distance, we avoid getting duplicated cases because the author variables might be swapped)
  FILTER(?distance > 1).
  # get *Label variables automagically
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
# sort by distance first (descending), then by first author, then by second author
ORDER BY DESC(?distance) ?author1Label ?author2Label

Query found at

• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/ar
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/be-tarask
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/ca
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/cs
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/da
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/de
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/en
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/en-gb
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/eo
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/es
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/eu
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/fr
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/he
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/hy
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/id
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/it
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/ja
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/ko
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/lb
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/lt
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/ms
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/nl
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/pl
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/pt-br
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/ro
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/ru
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/si
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/sv
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/th
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/tr
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/uk
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/vec
• https://www.wikidata.org/wiki/Wikidata:SPARQL_query_service/queries/examples/zh