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: HOWDY, "BUSTER" 
Clue: This 1895 sculpture was the first of 25 Western art bronzes by Frederic Remington

SOLUTION: bronco buster

PROBLEM: Category: "N" JOY 
Clue: A songbird, or the last name of nursing pioneer Florence

SOLUTION: nightingale

PROBLEM: Category: BY 2000 
Clue: Ukraine has promised to close this nuclear plant by 2000

SOLUTION:
chernobyl