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

Input: Consider Input: Aaron Copeland wrote a ballet about which American folk hero?

Output: aaron copeland


Input: Consider Input: Which future Nobel Prize winner did Bill Clinton choose as his Vice President?

Output: vice president of the united states


Input: Consider Input: What movement was founded by Charles Taze Russell in 1881?


Output: charles taze russell