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: impartial, pale, fair, dishonest, well
Example Output: pale

Example Input: deck, knockout, bow, sail, rudder
Example Output: knockout

Example Input: fine, attractive, alright, decent, well
Example Output:
attractive