Did {Zodiac_Killer} {occupation} {serial killer}?
Did Zodiac Killer have serial killer as an occupation?
was zodiac killer's occupation serial killer?
ASK WHERE { resource:Zodiac_Killer property:occupation resource:serial_killer }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q218148> . ?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/Q484188>. } 
ASK WHERE { wd:Q218148 wdt:P106 wd:Q484188 }