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: animal 
Words: stingray, horse, iguana, wrestle, fish

Output: wrestle


Input: Consider Input: Category: police punishment 
Words: ticket, comfortable, prime, custody, fine

Output: comfortable


Input: Consider Input: Category: season 
Words: spring, climb, hiems, equinox, fall


Output: climb