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:
crew, joker, deck, chips, pack

Ex Output:
crew


Ex Input:
hunt, fish, stingray, dolphin, bat

Ex Output:
hunt


Ex Input:
exquisite, alert, detached, ok, fine

Ex Output:

exquisite