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: nutritional value 
Words: iron, heavy, vitamin c, fat, brittleness

Output: brittleness


Input: Consider Input: Category: poker 
Words: blind, chips, queen, gunwale, deck

Output: gunwale


Input: Consider Input: Category: window material 
Words: glass, knifer, fiberglass, handle, vinyl


Output: knifer