Did {Dick_Cheney} {child} {Elizabeth Cheney} and {Mary Cheney} ?
How many children does Dick Cheney have?
Does Dick Cheney have children Elizabeth Cheney and Mary Cheney?
ASK WHERE { resource:Dick_Cheney property:child resource:Elizabeth_Cheney . resource:Dick_Cheney property:child resource:Mary_Cheney }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q48259> . ?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/Q5362573>. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q48259> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P40> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q442226>. } 
ASK WHERE { wd:Q48259 wdt:P40 wd:Q5362573 . wd:Q48259 wdt:P40 wd:Q442226 }