What is {discoverer or inventor of} of {zipper}, that has {career} is {engineer} ?
Who is the creator of the zipper whose carreer is in engineering?
Who is the inventor of the zipper whose carreer is in engineering?
SELECT ?r WHERE { ?r property:occupation resource:engineer . resource:zipper property:discoverer_or_inventor ?r }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q101761> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P61>. ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?answer. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P106> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q81096> . }
SELECT ?answer WHERE { wd:Q101761 wdt:P61 ?answer . ?answer wdt:P106 wd:Q81096}
Whitcomb L. Judson