instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
The 2002 Winter Olympics were held in which city?
answer:
2002 winter olympics


question:
Scamps Adventure was a 2001 straight-to-video follow up to which Disney film?
answer:
lady and the tramp ii: scamp's adventure


question:
In the UK television series 'Doctor Who', what is the name of the leader of the underground-dwelling race 'Tractators'?
answer:

doctor who