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: bow, gunwale, crew, deck, blocking
Example Output: blocking

Example Input: deck, dock, galley, joker, hull
Example Output: joker

Example Input: winter, roll, spring, hiems, fall
Example Output:
roll