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, endure, mild, color, tangle
Example Output: color

Example Input: cold, deal, make the grade, unprejudiced, fair
Example Output: unprejudiced

Example Input: fly, wave, leap, waggle, bee
Example Output:
wave