What is the {human} for {spouse} of {Janet Yellen}
Whom did Janet Yellen got hitched to?
Whom did Janet Yellen got married to?
SELECT DISTINCT ?k WHERE { ?k property:spouse resource:Janet_Yellen . ?k rdf:type ontology:human }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P26> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q263725> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P26 wd:Q263725 . ?sbj wdt:P31 wd:Q5 } 
George Akerlof