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

Name the town in California where Clint Eastwood was elected mayor in 1986.?
clint eastwood

Which Noble prize-winning novelist is best known for 'And Quiet Flows the Don?
and quiet flows the don

Which work by Charles Dickens is set in 'Coketown'?

charles dickens