What is {advisor} of {inventor of} of {Titan} ?
Who is Titan's inventor?
Who is the inventor of Titan?
SELECT ?j WHERE { resource:Titan property:discoverer_or_inventor ?v . ?v property:doctoral_advisor ?j }
SELECT ?answer WHERE { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q2565> . ?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/P184> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer . }
SELECT ?answer WHERE { wd:Q2565 wdt:P61 ?X . ?X wdt:P184 ?answer}
Frans van Schooten Jan Jansz de Jonge Stampioen