instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Bound for Glory is the 1943 autobiography of which singer-songwriter?
answer:
bound for glory


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


question:
School Master Thomas Gradgrind is a character in which Charles Dickens novel?
answer:

gradgrind