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: weather 
Words: brisk, ghostly, windy, fair, deal

Ex Output:
ghostly


Ex Input:
Category: moral characteristic 
Words: precise, grub, frank, stern, honesty

Ex Output:
grub


Ex Input:
Category: aesthetic characteristic 
Words: hot, classy, exquisite, calm, fine

Ex Output:

calm