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

Ex Input:
Which Afro American super model, TV personality and singer hosts the TV show, America's Next Top Model and also has her own daytime TV chat show?

Ex Output:
america's next top model


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:
Sailing aboard a converted WWII minesweeper, built right here in Ballard, WA in 1942, which noted French explorer is credited with inventing the aqualung, making modern scuba diving possible?

Ex Output:

aqua-lung