TASK DEFINITION: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
PROBLEM: Which race run at Chantilly in June is often referred to as the French Derby?

SOLUTION: chantilly racecourse

PROBLEM: In which constellation is the star Deneb?

SOLUTION: deneb

PROBLEM: How is the cocktail consisting of vodka, cranberry juice and grapefruit juice known?

SOLUTION:
cranberry juice