Given a set of five words, generate the word from the set that does not belong (i.e. is the least relevant) with the other words. Words are separated by commas.

Ex Input:
handsome, dull, flyaway, attractive, fine

Ex Output:
flyaway


Ex Input:
climbing, cow, hiking, fish, wrestle

Ex Output:
cow


Ex Input:
color, windy, cold, deal, fair

Ex Output:

color