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: bird 
Words: crane, pelican, egret, hummingbird, upraise

Ex Output:
upraise


Ex Input:
Category: aesthetic characteristic 
Words: high quality, there, fine, wispy, neat

Ex Output:

wispy