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: weather 
Words: equitable, fair, windy, cold, raining

Ex Output:
equitable


Ex Input:
Category: animal 
Words: swim, dive, fly, car, bee

Ex Output:
car


Ex Input:
Category: chocolate food 
Words: replace, heavy, fudge, rich, chocolate cake

Ex Output:

replace