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:
emotional supports, shameful, downward, loveful, down

Ex Output:
downward


Ex Input:
frank, bold, brash, precise, pork

Ex Output:
pork


Ex Input:
emotional, ground, ashamed, emotional upsets, down

Ex Output:

ground