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

[Q]: Who was Prime Minister of Australia at the outbreak of World War I?
[A]: australia


[Q]: After Harold McMillan who was Britain's next Prime Minister?
[A]: britain


[Q]: Formerly known as 'Marky Mark', who played 'Charlie Croker' in the 2003 film 'The Italian Job'?
[A]:
the italian job