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:
level, knockout, deck, fight, gunwale

Ex Output:
gunwale


Ex Input:
fine, content, acceptable, well, handsome

Ex Output:
handsome


Ex Input:
file, motherboard, fax, reception, schedule appointments

Ex Output:

motherboard