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: divide, fritter, dessert, whittle, spend

Ex Output:
dessert


Ex Input:
Category: outdoor sport activity 
Words: swim, wrestle, fish, canyoning, horse

Ex Output:
horse


Ex Input:
Category: aesthetic characteristic 
Words: milky, 70, color, fair, tone

Ex Output:

70