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: hardware, firewall, file, format, order office supplies

Output: order office supplies


Input: Consider Input: provision, frank, hot dog, goodies, harsh

Output: harsh


Input: Consider Input: sausage, frank, loyalty, cheese, pork


Output: loyalty