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, money, fine, prison, jail time

Ex Output:
comfortable


Ex Input:
fair, mild, loyal, alright, trustworthy

Ex Output:
mild


Ex Input:
slow, gated, nearer, close, open

Ex Output:

nearer