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: fish, stingray, climbing, trap, hiking

Output: stingray


Input: Consider Input: down, kind, opposite of up, lower, ground

Output: kind


Input: Consider Input: large, obese, fat, chunky, fiber


Output: fiber