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

Ex Input:
Who played Lionel Hardcastle in the TV series 'As Time Goes By'?

Ex Output:
as time goes by


Ex Input:
Who had a hit album with Back to Bedlam in 2005?

Ex Output:
back to bedlam


Ex Input:
What TV host would pretend to be a psychic swami named Carnac the Magnificent?

Ex Output:

carnac the magnificent