Question: Was Nicholas_II_of_Russia sibling Grand Duchess Olga Alexandrovna of Russia and Nicholas II of Russia ?
Paraphrase: Was Nicholas II of Russia a sibling of both the Grand Duchess Olga Alexandrovna of Russia and Nicholas II of Russia ?
SPARQL (Wikidata): ASK WHERE { wd:Q40787 wdt:P3373 wd:Q163176 . wd:Q40787 wdt:P3373 wd:Q40787 }