instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What's the name of Doctor Who's home planet ?
answer:
doctor who

question:
Eddie Jones was appointed head coach of which English sporting team in 2015?
answer:
eddie jones

question:
The film Schindler's List was based on whose Booker Prize winning novel of 1982?
answer:
schindler's list