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, unprejudiced, impartial, honorable, variety
Example Output: variety

Example Input: remorseful, flat, melancholy, down, shameful
Example Output: flat

Example Input: jog, crouch, lion, sprint, duck
Example Output:
lion