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

[EX Q]: What is the largest country in Africa?
[EX A]: africa

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

[EX Q]: Peter Blake, Richard Hamilton, Claes Oldenburg, and Jim Dine were amongst the leading exponents of which 1950's / 60's style of painting?
[EX A]:
peter blake