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: schedule, errands, file, schedule appointments, hardware

Output: hardware


Input: Consider Input: glass, wood, coating, knifer, woodwork

Output: knifer


Input: Consider Input: cat, sea turtle, fish, stingray, hunt


Output: hunt