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

Example Input: Which former Blue Peter presenter died in April 2004, aged 41?
Example Output: blue peter

Example Input: Which is the only film of the fantasy genre ever to win the best picture Oscar - full name required?
Example Output: academy award for best picture

Example Input: In which Texas city is the Alamo?
Example Output:
battle of the alamo