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: direction 
Words: down, backward, up, downward, shameful

Output: shameful


Input: Consider Input: Category: type of sandwich 
Words: open-faced, hero, club, discothek, hamburger

Output: discothek


Input: Consider Input: Category: shady activities 
Words: falsification, brownies, replace, fudge, falsehood


Output: brownies