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: frank, bold, brash, precise, pork

Output: pork


Input: Consider Input: relaxed, warm, assured, level, cool

Output: warm


Input: Consider Input: ring, deck, pack, box, level


Output: pack