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: size, unjust, tone, fair, medium
Example Output: unjust

Example Input: vodka, spider, gin, blackjack, go fish
Example Output: vodka

Example Input: hard, firm, llc, unbending, solid
Example Output:
llc