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 QUOTES 
Clue: This great Prussian king is credited with saying, "An army, like a serpent, travels on its belly"

A: frederick the great
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Q: Category: ART & ARTISTS 
Clue: An X-ray of his "Blue Boy" has revealed the figure of a small dog that was painted out

A: thomas gainsborough
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Q: Category: WORLD HISTORY 
Clue: In 1429, while leading an attack on Paris, she was wounded by an arrow

A:
joan of arc
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