Given an trivia question precisely answer the question with a word/phrase/name. External resources such as Wikipedia could be used to obtain the facts.
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Question: Before going solo, Lionel Richie sang with which group?

Answer: the commodores


Question: Holly Golightly is the heroine of which novel by Truman Capote?

Answer: breakfast at tiffany's


Question: Which 17th century French philosopher, mathematician, scientist, and writer showed, by using geometric construction and the law of refraction, that the angular radius of a rainbow is 42 degrees?

Answer:
rene descartes