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:
clime, level, cool, tone, fair

Ex Output:
clime


Ex Input:
duck, bend, ostrich, jog, stoop

Ex Output:
ostrich


Ex Input:
crew, deck, rudder, suits, hull

Ex Output:

suits