instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Name Alfred Hitchcock's first sound film as director?
answer:
alfred hitchcock


question:
Which Best Picture nominated movie tells the story of US soldier, 'Chris' Kyle?
answer:
chris kyle


question:
Who was the beautiful sister of the twins Castor and Pollux and mother to Hermione?
answer:

hermione