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: aesthetic characteristic 
Words: comfortable, pretty, there, fine, classy

Ex Output:
comfortable


Ex Input:
Category: date status 
Words: early, current, tide, up to the moment, do tests

Ex Output:
tide


Ex Input:
Category: animals 
Words: get down, sheep, duck, cat, goose

Ex Output:

get down