What is the {human} for {stepparent} of {Johnny Cash}
Who's the stepparent of Johnny Cash?
Who is Johnny Cash's stepparent?
SELECT DISTINCT ?s WHERE { ?s rdf:type ontology:human . ?s property:stepparent resource:Johnny_Cash }
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/P3448> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q42775> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P3448 wd:Q42775 . ?sbj wdt:P31 wd:Q5 } 
Carlene Carter Rosie Nix Adams