What is {head office location} of {discoverer} of {cavity magnetron} ?
Where is the head office of the pioneer of depth magnetron?
Where is the head office of the discoverer of cavity magnetron?
SELECT ?f WHERE { resource:cavity_magnetron property:discoverer_or_inventor ?p . ?p property:headquarters_location ?f }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q194154> . ?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> ?X . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?X. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P159> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q194154 wdt:P61 ?X . ?X wdt:P159 ?answer}
Birmingham