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

Ex Input:
Which American film actress, born in 1947, had a 14 year relationship with Clint Eastwood, starring with him in several films before splitting up in 1989?

Ex Output:
clint eastwood


Ex Input:
What did Banting and Best discover in 1921?

Ex Output:
charles herbert best


Ex Input:
In which long running BBC series did Bonnie Langford play the part of Melanie?

Ex Output:

bonnie langford