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

[Q]: In May 1940, who became British Prime Minister after the resignation of Neville Chamberlain?
[A]: prime minister of the united kingdom


[Q]: Which Dickens novel is subtitled The Parish Boy's Progress?
[A]: charles dickens


[Q]: What 2005 film, directed by Ang Lee, was based on a short story by Annie Proulx?
[A]:
ang lee