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 Cato Street Conspiracy was a plot to kill which British Prime Minister?

SOLUTION: prime minister of the united kingdom

PROBLEM: Who was the only boxer to win a world title without ever having a manager?

SOLUTION: boxing

PROBLEM: Who wrote the opera 'Boris Godunov' in 1874?

SOLUTION:
boris godunov