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:
ubiquitous, captain, typical, general, boring

Ex Output:
captain

Ex Input:
close, nearest, touching, on top of, barred

Ex Output:
barred

Ex Input:
file, schedule, type, text, correspondence

Ex Output:
text