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, sad, amp, fingerpick, string

Output: sad


Input: Consider Input: deck, tko, rudder, level, corner

Output: rudder


Input: Consider Input: flame, empower, fire, blaze, water


Output: empower