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

Ex Input:
In which war was the Battle of Bunker Hill?

Ex Output:
battle of bunker hill


Ex Input:
Chris Difford and Glenn Tilbrook founded which band in 1974?

Ex Output:
chris difford


Ex Input:
Which of these is a popular Bodybuilding magazine `Posedown`, `Gymbag` or `Flex`?

Ex Output:

bodybuilding