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: dump truck, tackle, crane, duck, mallet

Output: dump truck


Input: Consider Input: standard, general, regular, universal, commander

Output: commander


Input: Consider Input: sprint, pig, stoop, duck, crouch


Output: pig