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

[EX Q]: Which TV screenwriter created the science fiction shows, Survivors and Blake's Seven?
[EX A]: blake's 7

[EX Q]: In which wars did the battles of Towton and Barnet take place?
[EX A]: battle of barnet

[EX Q]: On 24 June 2010 Julia Gillard was elected to the leadership of her party and therefore became Prime Minister of Australia. Who was the previous Prime Minister?
[EX A]:
australia