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.

Ex Input:
Category: shady activities 
Words: falsehood, banned, heavy, unlicensed, fudge

Ex Output:
heavy


Ex Input:
Category: personal characteristic 
Words: assured, refreshing, unruffled, cool, positive

Ex Output:
refreshing


Ex Input:
Category: poker 
Words: deck, joker, fold, punch, pack

Ex Output:

punch