instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Who played Lionel Hardcastle in the TV series 'As Time Goes By'?
answer:
as time goes by


question:
Christopher Eccleston, Kerry Fox and Ewan McGregor played flatmates in which 1994 film?
answer:
christopher eccleston


question:
Which country owns the Canary islands?
answer:

canary islands