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: fly, leap, glide, car, bike

Output: leap


Input: Consider Input: kind, down, sad, backward, emotionalities

Output: backward


Input: Consider Input: moon, up to the moment, prompt, timely, current


Output: moon