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

Example Input: Which horse won the 2009 Epsom Derby?
Example Output: 2009 epsom derby

Example Input: In book and film, which vessel was commanded by Charlie Allnut?
Example Output: charlie allnut

Example Input: Formerly known as Sky Dome, Rogers Centre is home to what American League baseball team, the only MLB team located outside the United States?
Example Output:
american league