Did {Che_Guevara} {child} {Aleida Guevara}?
Is Che Guevara's daughter Aleida Guevara?
Is Aleida Guevara's father Che Guevara?
ASK WHERE { resource:Che_Guevara property:child resource:Aleida_Guevara }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q5809> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P40> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q438288>. } 
ASK WHERE { wd:Q5809 wdt:P40 wd:Q438288 }