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, general, basic, major, popular

Ex Output:
major


Ex Input:
signal, sea, current, drink, belated

Ex Output:
belated


Ex Input:
sunny, fair, deal, make the grade, even

Ex Output:

even