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: fudge, banned, brownie, unwarranted, fib
Example Output: brownie

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

Example Input: brash, courage, honest, vittles, frank
Example Output:
vittles