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: HISTORIC NAMES 
Clue: 2 of the people who witnessed his execution were John Wilkes Booth & Stonewall Jackson

A: john brown
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Q: Category: THE REVOLUTIONARY WAR 
Clue: In April 1775 Gen. J. Warren made him an official messenger of the Committee of Safety

A: paul revere
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Q: Category: SLOGANS 
Clue: In 1986 the Texas Department of Transportation began using this 4-word slogan as part of a campaign to prevent litter

A:
\"don\'t mess with texas\"
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