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 state, emotional supports, miserable, falling

Ex Output:
falling


Ex Input:
Category: animal 
Words: dangle, fly, run, car, pounce

Ex Output:
car


Ex Input:
Category: consumer product 
Words: clothing, content, service, substance, ecstatic

Ex Output:

ecstatic