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: emotional status 
Words: down, emotional upsets, disgusted, shameful, sliding

Ex Output:
sliding


Ex Input:
Category: weather 
Words: cold, 70, fair, well, luke

Ex Output:
well


Ex Input:
Category: direction 
Words: emotional state, south, left, ground, down

Ex Output:

emotional state