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.

Example Input: galley, head, suits, deck, dock
Example Output: suits

Example Input: provision, fortitude, frank, brash, honest
Example Output: provision

Example Input: glass, spyhole, handle, coating, knive
Example Output:
knive