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

Input: Consider Input: Barabas is the central character in what 16th century play?

Output: barabas

Input: Consider Input: Which race run at Chantilly in June is often referred to as the French Derby?

Output: chantilly racecourse

Input: Consider Input: Which film was based on the story The Sentinel by Arthur C Clarke?
Output: arthur c. clarke