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: tangle, fair, impartial, dishonest, balanced

Output: tangle


Input: Consider Input: fat, big boned, chunky, heavy, calcium


Output: calcium