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, well, milky, medium, loyal
Example Output: loyal

Example Input: fine, classy, mad, happy, relaxed
Example Output: classy

Example Input: beautiful, relaxed, alert, fine, calm
Example Output:
beautiful