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: swim, leaves, fall, hiems, spring

Output: swim


Input: Consider Input: bow, duck, sheep, goose, geese

Output: bow


Input: Consider Input: fat, ugly, sugar, salt, protein


Output: ugly