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, loveful, ashamed, flat

Ex Output:
flat


Ex Input:
Category: animal 
Words: fly, dangle, bee, jump, flap

Ex Output:
flap


Ex Input:
Category: outdoor sport activity 
Words: bat, hunting, hike, fish, hunt

Ex Output:

bat