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:
unwarranted, fudge, pudding, lie, unlicensed

Ex Output:
pudding


Ex Input:
dally, misuse, fritter, whittle, patty

Ex Output:
patty


Ex Input:
vitamin c, big, thin, carbs, fat

Ex Output:

thin