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: Which group had UK top ten hits in 1987 with 'Sweet Little Mystery' and 'Angel Eyes'?

Answer: angel eyes


Question: In which Shakespeare play do the characters Ajax, Achilles and Ulysses appear?

Answer: achilles


Question: Stadium Arcadium was a 2006 hit album for which band?

Answer:
stadium arcadium