instruction:
Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
question:
Who was Prime Minister of Australia at the outbreak of World War I?
answer:
australia

question:
Who directed the 1988 film 'Beetle Juice'?
answer:
beetlejuice

question:
In the first two series of which TV comedy drama did Ben Miller play D I Richard Poole?
answer:
ben miller