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: personal characteristic 
Words: cool, calm, warm, persistent, level

Output: warm


Input: Consider Input: Category: secretary duty 
Words: answer calls, image, organize, file, correspondence

Output: image


Input: Consider Input: Category: chocolate food 
Words: fudge, brownie, cupcake, cookies, falsification


Output: falsification