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 Neil Simon plays The Prisoner of Second Avenue and Brighton Beach Memoirs are set in which city?

SOLUTION: brighton beach memoirs

PROBLEM: Which of North America's Great Lakes has the same name as a province of Canada?

SOLUTION: canada

PROBLEM: Who was the first boxer to twice regain the world heavyweight title?

SOLUTION:
boxing