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:
vittles, integrity, cheese, pork, frank

Ex Output:
integrity


Ex Input:
ice, let go, fire, sack, replace

Ex Output:
ice


Ex Input:
relaxed, firstrate, fine, ticket, money

Ex Output:

relaxed