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: dump truck, hoist, crane, ostrich, goose

Output: dump truck


Input: Consider Input: beautiful, classy, dull, comfortable, fine

Output: comfortable


Input: Consider Input: variety, light, fair, medium, well


Output: well