Did {George_IV_of_the_United_Kingdom} {sibling} {Edward VIII} and {Prince Alfred of Great Britain} ?
Is George IV of the United Kingdom the brother of both Edward VIII and Prince Alfred of Great Britain?
Is George IV of the United Kingdom the sibling of Edward VIII and Prince Alfred of Great Britain?
ASK WHERE { resource:George_IV_of_the_United_Kingdom property:sibling resource:Edward_VIII . resource:George_IV_of_the_United_Kingdom property:sibling resource:Prince_Alfred_of_Great_Britain }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q130586> . ?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/Q590227>. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q130586> . ?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/Q2140119>. } 
ASK WHERE { wd:Q130586 wdt:P3373 wd:Q590227 . wd:Q130586 wdt:P3373 wd:Q2140119 }