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.

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

Output: canada


Input: Consider Input: Category: BANDS IN OTHER WORDS 
Clue: Ebony Sunday

Output: black sabbath


Input: Consider Input: Category: 1983: THE YEAR IN ENTERTAINMENT 
Clue: First Lady Nancy Reagan took her "Just say no" campaign to this Gary Coleman sitcom


Output: diff\'rent strokes