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: aesthetic characteristic 
Words: neat, alright, beautiful, level, fine

Output: alright


Input: Consider Input: Category: boats 
Words: check, stern, hull, galley, deck

Output: check


Input: Consider Input: Category: elements 
Words: ice, earth, instruct, heat, fire


Output: instruct