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: fine, classy, mad, happy, relaxed

Output: classy


Input: Consider Input: answer, answer calls, space, file, schedule

Output: space


Input: Consider Input: vitamin c, protein, fat, skinny, big


Output: skinny