Did {Nicholas_II_of_Russia} {sibling} {Grand Duchess Olga Alexandrovna of Russia} and {Nicholas II of Russia} ?
Was Nicholas_II_of_Russia sibling Grand Duchess Olga Alexandrovna of Russia and Nicholas II of Russia ?
ASK WHERE { wd:Q40787 wdt:P3373 wd:Q163176 . wd:Q40787 wdt:P3373 wd:Q40787 }
 ASK { ?statement1 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q40787> . ?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/Q163176>. ?statement2 <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q40787> . ?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/Q40787>. } 
Was Nicholas II of Russia a sibling of both the Grand Duchess Olga Alexandrovna of Russia and Nicholas II of Russia ?