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

Input: Consider 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?

Output: christian bale


Input: Consider Input: The plays 'The Barber of Seville' and 'Marriage of Figaro' were written by whom?

Output: the marriage of figaro


Input: Consider Input: By what name was the boxer Walker Smith Jr better known?


Output: boxing