What is <Biografisch Portaal number> of <Wilhelm Ostwald> ?
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What is Wilhelm Ostwald's Biografisch Portaal number?
SELECT DISTINCT ?n WHERE { resource:Wilhelm_Ostwald property:Biografisch_Portaal_van_Nederland_ID ?n }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q12658> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P651> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q12658 wdt:P651 ?answer}