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

Ex Input:
Who was the only boxer to win a world title without ever having a manager?

Ex Output:
boxing


Ex Input:
Who was in the films Zelig, Stardust Memories, and Broadway Danny Rose?

Ex Output:
broadway danny rose


Ex Input:
Which British monarch is the only one to have been born at Buckingham Palace?

Ex Output:

buckingham palace