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.

[Q]: Category: CINEMANIA 
Clue: Dude, in 1998 this brotherly team brought us "The Big Lebowski"
[A]: the coen brothers


[Q]: Category: NEWSPAPERS 
Clue: In 1868 the 1st edition of this annual reference book was published by the New York World
[A]: the world almanac


[Q]: Category: WAY UP NORTH 
Clue: A line called the 50 deg. summer isotherm  closely follows this northern limit of forest growth
[A]:
treeline