Instructions: 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.
Input: Category: HOLIDAYS & OBSERVANCES 
Clue: This observance began as a day to eat up all the stuff in your home you couldn't eat for the next 40 days
Output:
mardi gras