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: direction 
Words: down, backward, up, downward, shameful

Output: shameful


Input: Consider Input: Category: emotional status 
Words: down, melancholy, below, loveful, kind

Output: below


Input: Consider Input: Category: chocolate food 
Words: chocolate, fudge, mangle, cupcake, cookies


Output: mangle