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: below, backward, melancholy, down, ground

Output: melancholy


Input: Consider Input: Category: activity 
Words: fried, spend, whittle, waste, fritter

Output: fried


Input: Consider Input: Category: store status 
Words: finished for the day, close, shut, open, on top of


Output: on top of