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: clothing, content, service, substance, ecstatic
Example Output: ecstatic

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

Example Input: light, variety, clime, fair, size
Example Output:
clime