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:
wispy, jail, hot, hearing, fine

Ex Output:
hot


Ex Input:
exquisite, dull, high quality, fine, acceptable

Ex Output:
acceptable


Ex Input:
fine, there, beautiful, custody, hot

Ex Output:

custody