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: sugar, angular momentum, large, area, fat

Output: sugar


Input: Consider Input: ant, fly, bats, waggle, wave


Output: wave