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

[Q]: July 1938 saw the first ascent of the North Face of which Alpine mountain?
[A]: alps

[Q]: Name the town in California where Clint Eastwood was elected mayor in 1986.?
[A]: clint eastwood

[Q]: ..A tale of the riots of eighty completes the title of which work by Charles Dickens?
[A]:
charles dickens