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: duplex, studio, cabin, horizontal, flat

Output: horizontal


Input: Consider Input: ugly, absorption, vitamin c, fat, thin

Output: vitamin c


Input: Consider Input: brittleness, fat, calories, capacitance, angular momentum


Output: calories