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

Ex Input:
What hit song by the Crash Test Dummies comprised four three-letter words all containing the same letter?

Ex Output:
crash test dummies


Ex Input:
Which country mainly makes up the Horn of Africa?

Ex Output:
africa


Ex Input:
What is the capital of Barbados?

Ex Output:

barbados