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 instrument was Benny Goodman famous for playing?

SOLUTION: benny goodman

PROBLEM: What was the name of Chuck Berry`s 1972 hit which gave him his first number one?

SOLUTION: chuck berry

PROBLEM: Who wrote The Book of Snobs?

SOLUTION:
the book of snobs