Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Who is the current Australian prime minister ?

Answer: australia

Question: Princess Estelle, Duchess of Ostergotland, granddaughter to King Carl XVI Gustaf, became 2nd in line to what nation's throne when born in 2012?

Answer: carl xvi gustaf of sweden

Question: In which UK town or City is the Baltic Centre for Contemporary Arts?

Answer:
baltic centre for contemporary art