query-aa806527ee4a125d049983274894fa7c

TODO

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#>
#Libraries of the world
#defaultView:Map
SELECT ?library ?coord
WHERE {
  ?library wdt:P31 wd:Q7075 .

  OPTIONAL { ?library wdt:P625 ?coord }

  SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
}

Query found at

https://www.wikidata.org/wiki/User:Charles_Matthews/SPARQL_workshop_12_May_2019

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?coord"):::projected v1("?library"):::projected c2(["wd:Q7075"]):::iri c5(["bd:serviceParam"]):::iri c7(["en"]):::literal v1 --"wdt:P31"--> c2 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v1 -."wdt:P625".-> v2 end subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c5 --"wikibase:language"--> c7 end