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: pretty, probation, neat, fine, level

Ex Output:
probation


Ex Input:
Category: body part 
Words: elbow, foot, knee, inch, hand

Ex Output:
inch


Ex Input:
Category: emotional status 
Words: fearful, content, thing, nervous, jealous

Ex Output:

thing