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.

Example Input: war, brandy, bridge, gin, blackjack
Example Output: brandy

Example Input: unyielding, concerted, firm, combined, united
Example Output: unyielding

Example Input: nervous, output cord, emotional, fret, emotional upsets
Example Output:
output cord