TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: What was the name of Chuck Berry's 1972 hit which gave him his first number one?

SOLUTION: chuck berry

PROBLEM: Who was the CBS News anchor-man known as 'the man Americans most trust'?

SOLUTION: news presenter

PROBLEM: Which country had a parliament called the Duma?

SOLUTION:
state duma