Question: Nowhere Boy is based on a biography partially written by which half-sister of John Lennon?
Sentence (from "Nowhere Boy"): Nowhere Boy is a 2009 British biographical musical drama film about John Lennon's adolescence, his relationships with his aunt Mimi Smith and his mother Julia Lennon, the creation of his first band, the Quarrymen, and its evolution into the Beatles.
Relevant evidence: No