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: right, descending, down, opposite of up, emotional supports

Ex Output:
emotional supports


Ex Input:
Category: direction 
Words: down, backward, up, downward, shameful

Ex Output:
shameful


Ex Input:
Category: police punishment 
Words: firstrate, custody, probation, fine, pretty

Ex Output:

pretty