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.

Input: Consider Input: deck, knockout, bow, sail, rudder

Output: knockout


Input: Consider Input: size, unjust, tone, fair, medium

Output: unjust


Input: Consider Input: cold, plummet, fall, jump, plunge


Output: cold