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: boxing terminology 
Words: pack, level, deck, corner, jab

Ex Output:
pack


Ex Input:
Category: direction 
Words: kind, descending, down, opposite of up, flat

Ex Output:
kind


Ex Input:
Category: aesthetic characteristic 
Words: make the grade, texture, color, well, fair

Ex Output:

make the grade