Did {Colin_Firth} {sibling} {Jonathan Firth} and {Kate Firth} ?
Does Colin Firth have siblings named Jonathan Firth and Kate Firth?
Is Colin Firth a sibling of Jonathan Firth and Kate Firth?
ASK WHERE { resource:Colin_Firth property:sibling resource:Kate_Firth . resource:Colin_Firth property:sibling resource:Jonathan_Firth }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q162492> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3373> . ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q713766>. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q162492> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3373> . ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q4532014>. } 
ASK WHERE { wd:Q162492 wdt:P3373 wd:Q713766 . wd:Q162492 wdt:P3373 wd:Q4532014 }