Did {Mel_Gibson} {partner} {Oksana Grigorieva}?
Is Mel Gibson's wife Oksana Grigorieva?
Is Oksana Grigorieva Mel Gibson's wife?
ASK WHERE { resource:Mel_Gibson property:unmarried_partner resource:Oksana_Grigorieva }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q42229> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P451> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q4149360>. } 
ASK WHERE { wd:Q42229 wdt:P451 wd:Q4149360 }