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]: Which mediaeval author wrote The Canterbury Tales?
[EX A]: the canterbury tales

[EX Q]: Newcastle United striker Demba Ba plays international football for which country?
[EX A]:
demba ba