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

Ex Output:
shameful


Ex Input:
Category: emotional status 
Words: alright, alert, fine, detached, level

Ex Output:
level


Ex Input:
Category: nutritional value 
Words: heavy, protein, fat, sugars, area

Ex Output:

area