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

[EX Q]: The headquarters building of which government agency is known as 'The Doughnut' due to its shape?
[EX A]: the doughnut

[EX Q]: Who played Bonnie in the 1967 film `Bonnie And Clyde`?
[EX A]: bonnie and clyde

[EX Q]: Who directed the 1961 film 'Breakfast At Tiffany's'?
[EX A]:
breakfast at tiffany's