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: personal characteristic 
Words: assured, refreshing, unruffled, cool, positive

Ex Output:
refreshing


Ex Input:
Category: social gathering 
Words: group, dance hall, clan, club, dagwood

Ex Output:
dagwood


Ex Input:
Category: aesthetic characteristic 
Words: fair, variety, make the grade, milky, size

Ex Output:

make the grade