What is the {human} for {position held} of {Tokugawa shogunate}
Who led the Tokugawa shogunate?
Who was the leader of the Tokugawa shogunate?
SELECT DISTINCT ?w WHERE { ?w rdf:type ontology:human . ?w property:position_held resource:Tokugawa_Shogunate }
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/P39> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q205662> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P39 wd:Q205662 . ?sbj wdt:P31 wd:Q5 } 
Tokugawa Hidetada Tokugawa Ieyoshi