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: QUEEN ELIZABETH II 
Clue: It's Queen Elizabeth's official London residence

Answer: buckingham palace


Question: Category: FONTS OF INFORMATION 
Clue: This font shares its name with William, the first English printer

Answer: caxton


Question: Category: THE FRENCH 
Clue: Because the Seine flows northwest. then southwest, Parisians call the 2 sides this & this, not North & South

Answer:
rive gauche & rive droite