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: In which famous film did Michael Caine play a character named Charlie Croker?

Answer: charlie croker


Question: Auld Reekie is the nickname for which Scottish city?

Answer: auld reekie


Question: Which was the only country to win two silver medals and no other medals at the 2008 Summer Olympics (clue - both medals were won in men's sprint events)?

Answer:
2008 summer olympics