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.

Ex Input:
fair, unprejudiced, impartial, honorable, variety

Ex Output:
variety


Ex Input:
horse, trap, tiger, sea turtle, fish

Ex Output:
trap


Ex Input:
70, fine, fair, warm, cold

Ex Output:

fine