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: emotional status 
Words: down, remorseful, up, emotional supports, shameful

Ex Output:
up


Ex Input:
Category: window material 
Words: panel, translucent fabric, spatula, metal, glass

Ex Output:
spatula


Ex Input:
Category: aesthetic characteristic 
Words: neat, alright, beautiful, level, fine

Ex Output:

alright