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: animal 
Words: fly, dangle, bee, jump, flap

Ex Output:
flap


Ex Input:
Category: computers 
Words: errands, file, download, text, folder

Ex Output:
errands


Ex Input:
Category: boxing terminology 
Words: fight, chips, deck, canvas, box

Ex Output:

chips