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: boxing terminology 
Words: ring, lifeline, jab, deck, knockout

Output: lifeline


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

Output: group


Input: Consider Input: Category: weather 
Words: fair, cold, loyal, warm, windy


Output: loyal