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:
doorstep, community, open-faced, club, hoagie

Ex Output:
community


Ex Input:
apartment, round, valley, flat, even

Ex Output:
valley


Ex Input:
fair, trustworthy, impartial, fine, variety

Ex Output:

variety