Given a category and a set of five words, find the word from the set that does not belong (i.e. is the least relevant) with the other words in the category. Words are separated by commas.

Input: Consider Input: Category: aesthetic characteristic 
Words: fair, unprejudiced, level, tone, milky

Output: unprejudiced


Input: Consider Input: Category: guitar part 
Words: fret, worried, chord, notes, headstock

Output: worried


Input: Consider Input: Category: personal characteristic 
Words: calm, assured, freezing, relaxed, cool


Output: freezing