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

[Q]: Who was the first person to sign the American Declaration of Independence?
[A]: united states declaration of independence


[Q]: Kronos (or Cronus) was the Greek equivalent of which Roman god?
[A]: cronus


[Q]: In the 1968 film Chitty Chitty Bang Bang who buys the car from garage owner Mr Coggins and rebuilds it?
[A]:
chitty chitty bang bang