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: cow, fish, dog, sea turtle, hunt
Example Output: hunt

Example Input: emotional upsets, emotional supports, down, ashamed, up
Example Output: up

Example Input: deck, rudder, sail, canvas, gunwale
Example Output:
canvas