query-193f6d918a00f0166a727c3a55afce6b

rq turtle/ttl

Propertiesinstance of (P31)author (P50)OCLC control number (P243)

Use at

PREFIX wikibase: <http://wikiba.se/ontology#>
PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX bd: <http://www.bigdata.com/rdf#>
SELECT ?wdItem ?ocnURI ?wdItemLabel ?authorLabel ?ocnSuggest
WHERE {
  ?wdItem wdt:P31 wd:Q571;
          rdfs:label ?wdItemLabel;
          wdt:P50 ?author.
  ?author rdfs:label ?authorLabel.
  OPTIONAL { ?wdItem wdt:P243 ?ocn }
#  SERVICE wikibase:label { bd:serviceParam wikibase:language "en" }
  BIND(URI(CONCAT('http://www.worldcat.org/search?qt=worldcat_org_all&q=', ENCODE_FOR_URI(?wdItemLabel), ' ', ENCODE_FOR_URI(?authorLabel))) AS ?ocnSuggest)
  FILTER(!bound(?ocn))
  FILTER (LANG(?wdItemLabel)='en')
  FILTER (LANG(?authorLabel)='en')
}
LIMIT 10

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v5("?author") v1("?authorLabel"):::projected v3("?ocn") v6("?ocnSuggest"):::projected v4("?wdItem"):::projected v2("?wdItemLabel"):::projected c3(["wd:Q571"]):::iri f0[["?authorLabel = 'en'"]] f0 --> v1 f1[["?wdItemLabel = 'en'"]] f1 --> v2 f2[["not bound(?ocn)"]] f2 --> v3 v4 --"wdt:P31"--> c3 v4 --"rdfs:label"--> v2 v4 --"wdt:P50"--> v5 v5 --"rdfs:label"--> v1 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v4 -."wdt:P243".-> v3 end bind3[/"concat('http://www.worldcat.org/search?qt=worldcat_org_all&q=',encode-for-uri(?wdItemLabel),' ',encode-for-uri(?authorLabel))"/] v2 --o bind3 v1 --o bind3 bind3 --as--o v6