You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: SCIENCE CLASS 
Clue: (Sofia of the Clue Crew reports)  Botanists divide a flower into four main parts: sepals, petals, stamens & these

Answer: pistils


Question: Category: BEFORE & AFTER 
Clue: "Boss" Tweed's politically corrupt society that had a No. 1 hit with "Kiss on my List"

Answer: tammany hall & oates


Question: Category: WORLD CAPITALS 
Clue: From 1822 to 1960 this city served as Brazil's capital

Answer:
rio de janeiro