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: ring, deck, pack, box, level

Output: pack


Input: Consider Input: cream, wrongful, fix, fudge, smear

Output: cream


Input: Consider Input: delayed, history, up to the moment, current, flow


Output: flow