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

Ex Input:
What is the country of origin of the cheese called caerphilly?

Ex Output:
caerphilly cheese


Ex Input:
Which 'Coronation Street' character was played for may years by Jean Alexander?

Ex Output:
jean alexander


Ex Input:
Which actress played the detective Alex Drake in the BBC drama Ashes to Ashes?

Ex Output:

ashes to ashes