What is the {human} for {commander of} of {KGB}
Who is the pioneer of the KGB?
Who is the leader of the KGB?
SELECT DISTINCT ?o WHERE { ?o rdf:type ontology:human . ?o property:commander_of_(DEPRECATED) resource:KGB }
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/P598> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q80919> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P598 wd:Q80919 . ?sbj wdt:P31 wd:Q5 } 
Ivan Serov Vladimir Semichastny Yuri Andropov