What is the {human} for {chairperson} of {Social Democratic Party of Germany}
Specify the individual capable for heading the chairperson-ship of Social Equitable Party of Germany
Mention the person responsible for heading the chairperson-ship of Social Democratic Party of Germany
SELECT DISTINCT ?n WHERE { ?n rdf:type ontology:human . resource:Social_Democratic_Party_of_Germany property:chairperson ?n }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q49768> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P488> . ?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:Q49768 wdt:P488 ?obj . ?obj wdt:P31 wd:Q5 } 
Norbert Walter-Borjans Saskia Esken