Question: WHO IS THE SISTER OR BROTHER OF THE BAHAI FAITH FOUNDER?
Paraphrase: WHO ARE THE SIBLINGS OF THE BAHAI FAITH FOUNDER?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q22679 wdt:P112 ?X . ?X wdt:P3373 ?answer}
Answer: Subh-i-Azal, Mírzá Músá