instruction:
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.
question:
Category: POLITICAL QUOTATIONS 
Clue: It was said that being with these 2 leaders, born 1874 & 1882, "was like sitting between 2 lions roaring at the same time"
answer:
winston churchill & franklin delano roosevelt


question:
Category: HISTORIC NAMES 
Clue: 2 of the people who witnessed his execution were John Wilkes Booth & Stonewall Jackson
answer:
john brown


question:
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
answer:

carolus linnaeus