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:
jack, string, crying, neck, fret

Ex Output:
crying


Ex Input:
sergeant, general, standard, plain, ordinary

Ex Output:
sergeant


Ex Input:
ugly, carbs, skinny, fat, absorption

Ex Output:

carbs