Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Ex Input:
Cilantro is the leaf of which herb?

Ex Output:
cilantro

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

Ex Output:
news presenter

Ex Input:
Who wrote the 1949 play Death of a Salesman?

Ex Output:
death of a salesman