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

Which English king was the son of Edward, the Black Prince?
edward, the black prince

Which Football League club play their home games at Kingsmeadow, also known as the Cherry Red Records Stadium?
kingsmeadow

The town of Anthony in which US state was known as 'The Leap Year Capital of the World'?

united states