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:
comfortable, ok, decent, fine, suspension

Ex Output:
suspension


Ex Input:
current, water, detests, blue, jetstream

Ex Output:
detests


Ex Input:
hero, french toast, open-faced, club, group

Ex Output:

group