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

[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]: What was the currency of Austria before the Euro?
[EX A]: austria

[EX Q]: Which T.V. sitcom starred Donald Sinden, Windsor Davies and Honor Blackman?
[EX A]:
donald sinden