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: guitar part 
Words: fret, notes, emotional upsets, output cord, truss rod

Output: emotional upsets


Input: Consider Input: Category: aesthetic characteristic 
Words: variety, fair, alright, pale, flaxen

Output: alright


Input: Consider Input: Category: military rank 
Words: private, sargent, general, popular, major


Output: popular