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

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

Which mountain range extends through Morocco, Tunisia and Algeria, with its highest peak at Mount Jebel Toubkal?
tunisia

In the 2014 Winter Olympic Games who did the British women's curling team defeat to win a bronze medal?

2014 winter olympics