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

SOLUTION: canada

PROBLEM: Category: "H"ISTORIC PEOPLE 
Clue: Until 1876 his father Alois, who was illegitimate, used his grandmother's name, Schicklgruber

SOLUTION: adolf hitler

PROBLEM: Category: BREWERIES 
Clue: Ghettoblaster is both a CD & a beer produced by Motor City Brewing Works in this city

SOLUTION:
detroit