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.

Input: Consider Input: Category: physical property 
Words: brittleness, protein, bulky, skinny, fat

Output: protein


Input: Consider Input: Category: aesthetic characteristic 
Words: honorable, fair, variety, milky, even

Output: honorable


Input: Consider Input: Category: personal characteristic 
Words: positive, cool, scorching, classy, relaxed


Output: scorching