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

SOLUTION: crash test dummies

PROBLEM: Who died of a burst appendix after being punched in the stomach?

SOLUTION: appendicitis

PROBLEM: Who played the role of Georgiana Cavendish in the 2008 film 'The Duchess'?

SOLUTION:
georgiana cavendish, duchess of devonshire