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: prime, penalty, fine, mad, arrest

Output: mad


Input: Consider Input: Category: emotional status 
Words: board, bored, emotional supports, frustrated, fret

Output: board


Input: Consider Input: Category: emotional status 
Words: there, detached, fine, alright, calm


Output: there