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: fair, unprejudiced, level, tone, milky

Ex Output:
unprejudiced


Ex Input:
Category: bird 
Words: crane, pelican, egret, hummingbird, upraise

Ex Output:
upraise


Ex Input:
Category: aesthetic characteristic 
Words: there, classy, neat, detached, fine

Ex Output:

detached