instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In May 1940, who became British Prime Minister after the resignation of Neville Chamberlain?
answer:
prime minister of the united kingdom


question:
The 1987 film 'Roxanne' was adapted by actor Steve Martin from which Edmond Rostand play?
answer:
roxanne


question:
Which city is the capital of the Spanish region of Aragon?
answer:

aragon