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

Example Input: Which race run at Chantilly in June is often referred to as the French Derby?
Example Output: chantilly racecourse

Example Input: In 2011, Christian Bale won a Best Supporting Actor Oscar for his role as an assistant to his half-brother in which boxing related film?
Example Output: christian bale

Example Input: Circus was a 2008 single and album by which popstar?
Example Output:
circus