query-2eed43fbe502f492c3e69b33a1d0280b

rq turtle/ttl

Label of OPTIONAL

Use at

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#>
SELECT ?country ?countryLabel ?capital WHERE {
  ?country wdt:P31 wd:Q3624078 .
  FILTER NOT EXISTS { ?country wdt:P31 wd:Q3024240 } .
  OPTIONAL { ?country wdt:P36 ?capital} .
  SERVICE wikibase:label {
    bd:serviceParam wikibase:language "en" .
  }
} ORDER BY ?countryLabel

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v3("?capital"):::projected v2("?country"):::projected v1("?countryLabel"):::projected c2(["wd:Q3024240"]):::iri c3(["wd:Q3624078"]):::iri c6(["bd:serviceParam"]):::iri c8(["en"]):::literal f0[["not "]] subgraph f0e0["Exists Clause"] e0v1 --"wdt:P31"--> e0c2 e0v1("?country"):::projected e0c2(["wd:Q3024240"]):::iri end f0--EXISTS--> f0e0 f0 --> v2 f0 --> c1 f0 --> c2 v2 --"wdt:P31"--> c2 v2 --"wdt:P31"--> c3 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v2 -."wdt:P36".-> v3 end subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c6 --"wikibase:language"--> c8 end