What is the {human} for {father} of {Socrates}
Which person is Socrates' father?
Who was Socrates' father?
SELECT DISTINCT ?v WHERE { ?v property:father resource:Socrates . ?v 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/P22> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q913> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P22 wd:Q913 . ?sbj wdt:P31 wd:Q5 } 
Menexenus Lamprocles