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

[EX Q]: Which boxer was nicknames `The Brown Bomber`?
[EX A]: boxing

[EX Q]: Which actress played Arwen in the trilogy of films?
[EX A]: arwen

[EX Q]: Which dessert is also known as 'Tuscan Trifle'?
[EX A]:
dessert