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: emotional status 
Words: down, remorseful, up, emotional supports, shameful

Output: up


Input: Consider Input: Category: outdoor sport activity 
Words: dog, swim, hike, hiking, fish

Output: dog


Input: Consider Input: Category: construction 
Words: digger, hoist, crane, winch, dump truck


Output: winch