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

Ex Input:
Who hosted Call My Bluff?

Ex Output:
call my bluff


Ex Input:
Which British Prime Minister delivered the 'Winds of Change' speech in 1960?

Ex Output:
wind of change


Ex Input:
In what theater was Abraham Lincoln shot?

Ex Output:

abraham lincoln