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: knockout, blocking, crew, tko, deck

Output: crew


Input: Consider Input: relaxed, warm, assured, level, cool

Output: warm


Input: Consider Input: fritter, divide, squander, doughnut, waste away


Output: doughnut