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: fret, nervous, board, fingerpick, jack

Output: nervous

Input: Consider Input: deck, stern, apron, blocking, caution

Output: stern

Input: Consider Input: fish, shark, kayak, whale, sea turtle
Output: kayak