query-8853db181ad6518570ad0d9b888e9822

rq turtle/ttl

Books from an author with their publication date (Q184226)Gilles Deleuze Example here with

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 ?book ?bookLabel ?date WHERE {
  ?book wdt:P31/wdt:P279* wd:Q571 .
  ?book wdt:P50 wd:Q184226 .
  OPTIONAL {
    ?book wdt:P577 ?date .
  }
  SERVICE wikibase:label {
    bd:serviceParam wikibase:language "en,fr"
  }
}

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v1("?book"):::projected v2("?date"):::projected a1((" ")) c8(["bd:serviceParam"]):::iri c5(["wd:Q184226"]):::iri c10(["en,fr"]):::literal c3(["wd:Q571"]):::iri v1 --"wdt:P31"--> a1 a1 --"wdt:P279"--> c3 v1 --"wdt:P50"--> c5 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v1 -."wdt:P577".-> v2 end subgraph s1["http://wikiba.se/ontology#label"] style s1 stroke-width:4px; c8 --"wikibase:language"--> c10 end