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: current, dastards, prompt, course, timely

Output: course


Input: Consider Input: order office supplies, sort mail, file, program, type

Output: program


Input: Consider Input: schedule appointments, space, program, file, text


Output: schedule appointments