TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: In which Shakespeare play do the characters Ajax, Achilles and Ulysses appear?

SOLUTION: achilles

PROBLEM: Denzil Washington played which black militant leader in the 1992 film of the same name?

SOLUTION: denzel washington

PROBLEM: Which entertainer uses various names, including Puff Daddy, P. Diddy and Diddy?

SOLUTION:
p. diddy