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, content, acceptable, well, handsome

Ex Output:
handsome


Ex Input:
spring, run, fall, equinox, autumn

Ex Output:
run


Ex Input:
foot, kilometer, ounce, ear, mile

Ex Output:

ear