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: format, sort mail, make coffee, order office supplies, file

Output: format


Input: Consider Input: deck, stern, apron, blocking, caution

Output: stern


Input: Consider Input: cupcake, fudge, brownies, falsehood, heavy


Output: falsehood