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.

[Q]: Category: AMERICAN LITERATURE 
Clue: Controversial even when serialized in the "National Era", it sold over 300,000 copies in book form in 1852
[A]: uncle tom\'s cabin


[Q]: Category: SCIENTIFIC MNEMONICS 
Clue: "Kings play chess on finely grained sand" is a mnemonic device used to help remember a system devised by this scientist
[A]: carolus linnaeus


[Q]: Category: U.S. PRESIDENTS 
Clue: The Roosevelt dime made its debut the year this president was born
[A]:
bill clinton