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

Example Input: Which sprinter lit the Olympic flame at the 2000 Summer Olympic Games in Australia?
Example Output: 2000 summer olympics

Example Input: Dora Maar au Chat and The Weeping Woman are both portraits by which artist of his lover?
Example Output: dora maar au chat

Example Input: The Battle of Poltava in 1709 was a victory by Peter the Great over which state?
Example Output:
battle of poltava