What is <YouPorn ID> of <Rocco Siffredi> ?
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Which YouPorn ID belongs to Rocco Siffredi?
SELECT DISTINCT ?m WHERE { resource:Rocco_Siffredi property:YouPorn_ID ?m }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q56219> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P5267> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q56219 wdt:P5267 ?answer}