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

[EX Q]: Who wrote '20,000 Leagues Under The Sea'?
[EX A]: 20,000 leagues under the sea

[EX Q]: Which English classic horse race for 3 year olds held at Doncaster every September began in 1776?
[EX A]: doncaster racecourse

[EX Q]: To what political office was Dean Rusk appointed in 1961, as a result of which he played a leading role in the 'Cuban Missile Crisis' the following year?
[EX A]:
dean rusk