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

[EX Q]: Double vision, the perception of two images from a single object, is properly called what?
[EX A]: double vision

[EX Q]: Who died of a burst appendix after being punched in the stomach?
[EX A]: appendicitis

[EX Q]: At which Grand prix circuit was Ayrton Senna killed in 1994?
[EX A]:
ayrton senna