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: boats 
Words: deck, gunwale, queen, lifeline, bridge

Ex Output:
queen


Ex Input:
Category: physical property 
Words: fat, area, ugly, capacitance, calcium

Ex Output:
calcium


Ex Input:
Category: boxing terminology 
Words: deck, blocking, tko, dock, fight

Ex Output:

dock