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:
deal, fair, endure, windy, ghostly

Ex Output:
ghostly


Ex Input:
crying, truss rod, angry, emotional supports, fret

Ex Output:
truss rod


Ex Input:
impartial, trustworthy, honorable, fair, tangle

Ex Output:

tangle