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.

[EX Q]: Category: DIGESTION 
Clue: This substance in your food slows down the digestive process & is what bile works on
[EX A]: fat

[EX Q]: Category: THAT'S SO CLICHE! 
Clue: To suffer a major defeat or setback is to "meet your" this, like Napoleon
[EX A]: waterloo

[EX Q]: Category: PARTICLE PHYSICS 
Clue: In 2000 the tau neutrino was first observed at this Illinois lab named for a foreign-born physicist
[EX A]:
the fermilab