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: type of sandwich 
Words: submarine, group, club, roll, grilled cheese

Output: group


Input: Consider Input: Category: aesthetic characteristic 
Words: neat, alright, beautiful, level, fine

Output: alright


Input: Consider Input: Category: emotional status 
Words: miserable, remorseful, up, down, emotional upsets


Output: up