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: inlays, concerned, string, notes, fret

Output: concerned


Input: Consider Input: ecstatic, specialty, substance, content, merchandise

Output: ecstatic


Input: Consider Input: ok, hearing, fine, content, mad


Output: hearing