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

[EX Q]: What was the name of the 1963 Disney live action movie, where 3 animals ventured to get themselves home?
[EX A]: walt disney pictures

[EX Q]: Where on Prince Edward Island, Canada, is Anne of Green Gables located?
[EX A]: canada

[EX Q]: Whose armies were defeated at the Battle of Waterloo in 1815?
[EX A]:
battle of waterloo