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.

Ex Input:
Category: police punishment 
Words: penalty, fine, money, arrest, alright

Ex Output:
alright


Ex Input:
Category: emotional status 
Words: content, hearing, fine, happy, alert

Ex Output:
hearing


Ex Input:
Category: food 
Words: pork, vittles, frank, sausage, stern

Ex Output:

stern