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: fair, raining, equitable, impartial, unjust
Example Output: raining

Example Input: comfortable, money, fine, prison, jail time
Example Output: comfortable

Example Input: fair, luke, fine, cold, clime
Example Output:
fine