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: Christopher Eccleston, Kerry Fox and Ewan McGregor played flatmates in which 1994 film?

Answer: christopher eccleston


Question: What nickname is given to the Australian Association Football International team?

Answer: australia


Question: In which Europeancity would you find the giant monument called 'The Atomium'?

Answer:
atomium