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.

Ex Input:
Category: location (proximity) 
Words: beside, closest, close, adjacent, shut

Ex Output:
shut


Ex Input:
Category: weather 
Words: luke, equitable, clime, fair, mild

Ex Output:
equitable


Ex Input:
Category: direction 
Words: kind, descending, down, opposite of up, flat

Ex Output:

kind