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: bow, duck, sheep, goose, geese

Output: bow


Input: Consider Input: classy, relaxed, cold, funny, cool


Output: cold