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 what story of Arthur C. Clarke do Tibetan monks seek to list all the names of God as they believe He will bring the Universe to an end once this is done?

Answer: arthur c. clarke


Question: Brasilia is the capital but which city in Brazil has the largest population?

Answer: brazil


Question: Which actress links the 1989 film `Tango and Cash` and the TV series `Desperate Housewives`?

Answer:
desperate housewives