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

[Q]: In which famous film did Michael Caine play a character named Charlie Croker?
[A]: charlie croker

[Q]: The 2002 Winter Olympics were held in which city?
[A]: 2002 winter olympics

[Q]: Who wrote the novel 'Do Anderoids Dream Of Electric Sheep', the basis of the screenplay for the film 'Blade Runner'?
[A]:
blade runner