TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: The Brooklyn Bridge crosses which river?

SOLUTION: brooklyn bridge

PROBLEM: In which famous film did Michael Caine play a character named Charlie Croker?

SOLUTION: charlie croker

PROBLEM: In James Bond novels and films, what is the codename for the fictional research and development division of the British Secret Service?

SOLUTION:
james bond