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:
fair, color, unprejudiced, fine, decent

Ex Output:
color


Ex Input:
answer, answer calls, space, file, schedule

Ex Output:
space


Ex Input:
firstrate, jail time, fine, bright, jail

Ex Output:

bright