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: accomodation 
Words: even, townhome, level, flat, paved

Output: level


Input: Consider Input: Category: moral characteristic 
Words: honest, harsh, stern, frank, meat


Output: meat