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: police punishment 
Words: classy, probation, custody, fine, flyaway

Output: classy


Input: Consider Input: Category: computers 
Words: download, file, order office supplies, document, motherboard

Output: order office supplies


Input: Consider Input: Category: corporate 
Words: concerted, united, hard, firm, common


Output: hard