What is the {human} for {head of state} of {Czechoslovakia}
Who is the pioneer of Czechoslovakia?
Who is the leader of Czechoslovakia?
SELECT DISTINCT ?x WHERE { resource:Czechoslovakia property:head_of_state ?x . ?x rdf:type ontology:human }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q33946> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P35> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?obj where { wd:Q33946 wdt:P35 ?obj . ?obj wdt:P31 wd:Q5 } 
Tomáš Garrigue Masaryk Edvard Beneš Antonín Novotný Emil Hácha Gustáv Husák Klement Gottwald Ludvík Svoboda Antonín Zápotocký Václav Havel