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

Ex Input:
Chris Difford and Glenn Tilbrook founded which band in 1974?

Ex Output:
chris difford


Ex Input:
Who wrote the 1939 book The Big Sleep?

Ex Output:
the big sleep


Ex Input:
Aurora was the Roman goddess of the dawn, who was her Greek counterpart?

Ex Output:

aurora