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: file, prepare, document, space, folder

Output: prepare


Input: Consider Input: fine, prime, firstrate, custody, ok

Output: ok


Input: Consider Input: detestings, whirlpool, jetstream, brine, current


Output: detestings