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:
concise, vittles, wiener, provision, frank

Ex Output:
concise


Ex Input:
flyaway, penalty, prime, fine, comfortable

Ex Output:
comfortable


Ex Input:
even, luke, brisk, fair, stormy

Ex Output:

even