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

[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]: Better known as an actor, who directed the film `A Bronx Tale`?
[EX A]: a bronx tale

[EX Q]: In which constellation is the star Deneb?
[EX A]:
deneb