instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Name the town in California where Clint Eastwood was elected mayor in 1986.?
answer:
clint eastwood


question:
What was the last silent film in which Chaplin's little tramp appeared?
answer:
chaplin


question:
Who directed the 2003 film starring Ewan McGregor, Billy Crudup and Albert Finney called Big Fish?
answer:

big fish