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: direction 
Words: below, backward, melancholy, down, ground

Ex Output:
melancholy


Ex Input:
Category: weather 
Words: brisk, fair, sunny, cold, balanced

Ex Output:
balanced


Ex Input:
Category: location (proximity) 
Words: bordering, close, adjacent, closest, finished for the day

Ex Output:

finished for the day