instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
In which famous film did Michael Caine play a character named Charlie Croker?
answer:
charlie croker


question:
Which European country contains the ski resorts of Davos and Klosters?
answer:
klosters


question:
What creatures are T S Eliot's characters Mr Mistoffelees, Mungojerrie, Rumpelteazer, and Bustopher Jones, and what musical was inspired by the poem book in which they feature?
answer:

bustopher jones