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

Example Input: Chris Difford and Glenn Tilbrook founded which band in 1974?
Example Output: chris difford

Example Input: What is the French name for the English Channel?
Example Output: channel

Example Input: Which author created the characters 'Veruca Salt', 'Augustus Sloop' and 'Arthur Slugworth'?
Example Output:
charlie and the chocolate factory