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: trustworthy, decent, fair, tone, ok

Output: tone


Input: Consider Input: inlays, concerned, string, notes, fret

Output: concerned


Input: Consider Input: fret, nervous, truss rod, concerned, emotional state


Output: truss rod