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: outdoor sport activity 
Words: hunting, goat, wrestle, fish, raft

Ex Output:
goat


Ex Input:
Category: emotional status 
Words: fine, relaxed, comfortable, prime, content

Ex Output:
prime


Ex Input:
Category: aesthetic characteristic 
Words: brisk, even, ghostly, fair, size

Ex Output:

brisk