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

[EX Q]: Who plays Isobel Crawley in the UK television series 'Downton Abbey'?
[EX A]: downton abbey

[EX Q]: Who succeeded Jon Pertwee as Doctor Who?
[EX A]: doctor who

[EX Q]: Which Formula One driver won the 2014 British Grand Prix?
[EX A]:
2014 british grand prix