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:
color, variety, well, fair, decent

Ex Output:
decent


Ex Input:
clime, level, cool, tone, fair

Ex Output:
clime


Ex Input:
club, team, dagwood, hero, roll

Ex Output:

team