instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
What hit song by the Crash Test Dummies comprised four three-letter words all containing the same letter?
answer:
crash test dummies


question:
The Battle of Antietam was fought during which war?
answer:
battle of antietam


question:
Deborah Kerr played the female lead in the film version of which musical ?
answer:

deborah kerr