Did {Bruno_Mars} {occupation} {model}?
Has Bruno Mars ever worked as a model?
Was Bruno Mars a model?
ASK WHERE { resource:Bruno_Mars property:occupation resource:model }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1450> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P106> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q4610556>. } 
ASK WHERE { wd:Q1450 wdt:P106 wd:Q4610556 }