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: MOUNTAINS 
Clue: Yosemite National Park is located in this California mountain range

SOLUTION: sierra nevadas

PROBLEM: Category: IN OTHER WORDS... 
Clue: An ancient alma mater attempt

SOLUTION: the old college try

PROBLEM: Category: HAPPY 50th NASA 
Clue: NASA took up JFK's 1961 challenge to do this by decade's end & met it with 5 months to spare

SOLUTION:
put a man on the moon