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 consistency, answers should be in all lower cased letters.
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Question: Category: THAT'S NOT HOW THAT BOOK ENDS! 
Clue: ...All perfume no & his heart was going like mad & no I said no I won't no then I kicked him no

Answer: ulysses


Question: Category: ENVIRONMENTALISM 
Clue: The world's first national park was Yellowstone, opened in 1872; this country opened its first park at Banff in 1887

Answer: canada


Question: Category: HISTORIC QUOTES 
Clue: In 1521 he told the Diet of Worms, "I cannot and I will not recant anything"

Answer:
luther