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:
Which city has sports teams known as the 'Maple Leafs' and the 'Blue Jays'?

Ex Output:
toronto blue jays


Ex Input:
What are muslin and chenille?

Ex Output:

muslin