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.

Input: Consider Input: luke, make the grade, fair, milky, deal

Output: milky


Input: Consider Input: truss rod, emotional supports, emotional upsets, emotionalities, fret

Output: truss rod


Input: Consider Input: beside, steady, out of service, close, open


Output: beside