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: PAINT YOUR WAGON 
Clue: The body of a Conestoga wagon was the Prussian shade of this

SOLUTION: blue

PROBLEM: Category: BEGINS & ENDS WITH "K" 
Clue: In 1979 this rock group topped the charts with "My Sharona"

SOLUTION: the knack

PROBLEM: Category: FOOD 
Clue: When it's young & tender, this gourd used in the bathtub can be eaten like a squash

SOLUTION:
a luffa