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:
annoyed, detailed, well, fine, content

Ex Output:
detailed


Ex Input:
file, keys, document, fax, ram

Ex Output:
fax


Ex Input:
blackjack, tequila, pinochle, gin, go fish

Ex Output:

tequila