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: THE SOLAR SYSTEM 
Clue: The 2 planets in our solar system that have atmospheres made up mostly of carbon dioxide

Answer: venus & mars


Question: Category: AMERICAN AUTHORS 
Clue: In 1900 the Atlantic Monthly published his story "An Odyssey of the North", his literary breakthrough

Answer: jack london


Question: Category: PARADES 
Clue: The theme of Richard Nixon's second inaugural parade, he thought he'd be in office to celebrate it

Answer:
the bicentennial