instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Which European country contains the ski resorts of Davos and Klosters?
answer:
klosters

question:
Who has taken over the TV role of Doctor Who, from actor David Tennant?
answer:
doctor who

question:
Which company owns British Gas?
answer:
british gas