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: bow, duck, sheep, goose, geese

Output: bow


Input: Consider Input: fair, make the grade, trustworthy, alright, just

Output: make the grade


Input: Consider Input: vitamin c, fat, fiber, protein, heavy


Output: heavy