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

Ex Input:
From which musical did the song 'Chim Chim Cheree' come?

Ex Output:
chim chim cher-ee

Ex Input:
In 2013 Yahoo purchased which pictures and video microblogging website business that was founded in 2007 in New York City by David Karp?

Ex Output:
yahoo!

Ex Input:
In the 19th century, Edward Gibbon Wakefield set up which organisation to colonise New Zealand?

Ex Output:
edward gibbon wakefield