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:
mallet, winch, parrot, winch, crane

Ex Output:
winch


Ex Input:
neat, alright, beautiful, level, fine

Ex Output:
alright


Ex Input:
entree, provision, frank, concise, goodies

Ex Output:

concise