TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which Beatle played Youngman Grand in The Magic Christian 1969, with Peter Sellers?

SOLUTION: the beatles

PROBLEM: What is the largest country in Africa?

SOLUTION: africa

PROBLEM: Which heavyweight boxing World Champion was born in Brockton Massachusetts in 1923, and died in a plane crash in 1969?

SOLUTION:
brockton, massachusetts