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: chunky, heavy, fat, area, sugar
Example Output: sugar

Example Input: annoyed, fine, exquisite, alert, ok
Example Output: exquisite

Example Input: funny, persistent, positive, cool, warm
Example Output:
warm