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

Ex Input:
What is the main river of Brazil?

Ex Output:
brazil


Ex Input:
The strongly featured character Alyson/Alys in Chaucer's Canterbury Tales is better known as?

Ex Output:
the canterbury tales


Ex Input:
What was the first Beatles song licensed for use in a Nike add?

Ex Output:

the beatles