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:
honorable, medium, trustworthy, fair, balanced

Ex Output:
medium


Ex Input:
fair, raining, trustworthy, endure, 70

Ex Output:
trustworthy


Ex Input:
bar, french toast, submarine, toast, club

Ex Output:

bar