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: even, size, fair, level, ok

Output: ok


Input: Consider Input: milky, fair, well, alright, impartial

Output: milky


Input: Consider Input: happy, penalty, jail time, prime, fine


Output: happy