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

Input: Consider Input: What currency is used on Christmas Island?

Output: christmas island


Input: Consider Input: The Battle of Poltava in 1709 was a victory by Peter the Great over which state?

Output: battle of poltava


Input: Consider Input: In the novel 'Jane Eyre' by Charlotte Bronte, what is the name of Mr Rochester's first wife?


Output: charlotte bronte