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: foot, knee, eye, leg, ounce

Output: ounce


Input: Consider Input: finger, heel, foot, ounce, elbow

Output: ounce


Input: Consider Input: blunt, grub, fortitude, concise, frank


Output: grub