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

[EX Q]: In which city were the 1912 Olympic games held Oslo, Antwerp or Stockholm?
[EX A]: 1912 summer olympics

[EX Q]: Which American actor and singer has joined Amanda Holden as one of the judges on the current series of 'Britain's Got Talent'?
[EX A]: britain's got talent

[EX Q]: Which trio had their first No 1 album with 'Duke' in 1980?
[EX A]:
duke