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: activity 
Words: fritter, waste, pie, waste away, lollygag

Ex Output:
pie


Ex Input:
Category: physical property 
Words: sugars, obese, big boned, fat, pasty

Ex Output:
sugars


Ex Input:
Category: aesthetic characteristic 
Words: well, windy, even, fair, level

Ex Output:

windy