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: comfortable, pretty, there, fine, classy

Ex Output:
comfortable


Ex Input:
Category: activity 
Words: dally, seperate, fritter, waste, fried

Ex Output:
fried


Ex Input:
Category: physical activity 
Words: exercise, tumble, equinox, fall, bend

Ex Output:

equinox