Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Input: Consider Input: Category: boxing terminology 
Words: glove, level, deck, corner, board

Output: board


Input: Consider Input: Category: direction 
Words: down, lower, emotional upsets, below, falling

Output: emotional upsets


Input: Consider Input: Category: police punishment 
Words: attractive, fine, firstrate, ticket, money


Output: attractive