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:
fine, prime, arrest, hot, jail time

Ex Output:
hot


Ex Input:
deck, board, corner, knockout, fight

Ex Output:
board


Ex Input:
neck, fret, emotionalities, emotional supports, sad

Ex Output:

neck