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

Example Input: Which English comedian has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?
Example Output: britain's got talent

Example Input: Allopurinol is typically prescribed for which illness?
Example Output: allopurinol

Example Input: Which `M` is the capital of the American state of Alabama?
Example Output:
alabama