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: poker 
Words: ring, deck, blind, cards, joker

Ex Output:
ring


Ex Input:
Category: physical property 
Words: protein, pasty, fat, thin, angular momentum

Ex Output:
protein


Ex Input:
Category: emotional status 
Words: remorseful, below, down, unhappy, emotional state

Ex Output:

below