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:
galley, head, suits, deck, dock

Ex Output:
suits


Ex Input:
hunt, whale, shark, fish, mice

Ex Output:
hunt


Ex Input:
fearful, content, thing, nervous, jealous

Ex Output:

thing