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: hearing, firstrate, alert, custody, fine

Ex Output:
alert


Ex Input:
Category: aesthetic characteristic 
Words: neat, alright, beautiful, level, fine

Ex Output:
alright


Ex Input:
Category: window material 
Words: fiberglass, fork, glass, acrylic, translucent fabric

Ex Output:

fork