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:
descending, disgusted, emotionalities, emotional supports, down

Ex Output:
descending


Ex Input:
emotional upsets, pick, emotional state, fret, emotional supports

Ex Output:
pick


Ex Input:
flat, descending, disgusted, down, right

Ex Output:

disgusted