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 which country did the dance The Czardas originate?

Output: csardas


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 opera Duke Bluebeard's Castle and the ballet The Wooden Prince are the works of which composer?


Output: bluebeard's castle