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.

[Q]: Category: PAINT YOUR WAGON 
Clue: The body of a Conestoga wagon was the Prussian shade of this
[A]: blue


[Q]: Category: YOU, ME & DUE PROCESS 
Clue: In 1970 the Supreme Court held for the first time that due process required proof of guilt "beyond" this
[A]: reasonable doubt


[Q]: Category: FOOD FOR THOUGHT 
Clue: Squash & sweet potatoes are rich in this orange pigment that's good for the eyes & the brain
[A]:
beta carotene