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: flap, glide, fly, train, bats

Output: bats


Input: Consider Input: size, equitable, fair, alright, fine

Output: size


Input: Consider Input: swan, crouch, hike, duck, squat


Output: swan