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: club, open-faced, bacon, french toast, dance hall
Example Output: dance hall

Example Input: texture, deal, fair, cold, sunny
Example Output: texture

Example Input: ostrich, sheep, duck, horse, swim
Example Output:
swim