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: windlass, hummingbird, neck, crane, duck

Output: windlass


Input: Consider Input: acceptable, fine, comfortable, pretty, well

Output: pretty


Input: Consider Input: glass, spyhole, vinyl, knive, lead


Output: knive