TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: What famous song from the film Butch Cassidy and the Sundance Kid won an Oscar for best song?

SOLUTION: academy award for best original song

PROBLEM: 'Edward Lewis' and 'Vivian Ward' were the principal characters in which popular 1990 film?

SOLUTION: edward lewis

PROBLEM: Who played Cat Woman in the 1997 film Batman Returns?

SOLUTION:
catwoman