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: animal 
Words: goat, cat, fish, hamster, hunting

Ex Output:
hunting


Ex Input:
Category: chocolate food 
Words: rich, molasses, fudge, brownies, wrongful

Ex Output:
wrongful


Ex Input:
Category: baby animals 
Words: deer, identity, fawn, antling, kitten

Ex Output:

identity