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

[EX Q]: Who directed the 1988 film 'Beetle Juice'?
[EX A]: beetlejuice

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

[EX Q]: The painting 'A Bar at the Folies-Bergere' c1882 displayed at the Cortauld Gallery, London is by which artist?
[EX A]:
a bar at the folies-bergere