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

In which US state are the Catskill Mountains?
catskill mountains

Bob Clampett created which character in 1938?
bob clampett

What church, known as the Irvingites mainly due to the preaching of Edward Irving, was founded in Scotland in 1832?

edward irving