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: loveful, up, down, remorseful, melancholy
Example Output: up

Example Input: ostrich, hoist, egret, crane, parrot
Example Output: hoist

Example Input: backward, emotional supports, down, shameful, kind
Example Output:
backward