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: moral characteristic 
Words: precise, grub, frank, stern, honesty

Ex Output:
grub


Ex Input:
Category: employment activity 
Words: sack, inferno, promote, empower, fire

Ex Output:
inferno


Ex Input:
Category: computers 
Words: hardware, firewall, file, format, order office supplies

Ex Output:

order office supplies