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:
tangle, fair, impartial, dishonest, balanced

Ex Output:
tangle


Ex Input:
fair, mild, loyal, alright, trustworthy

Ex Output:
mild


Ex Input:
cadet, general, commander, private, average

Ex Output:

average