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: bird 
Words: goose, hoist, neck, swallow, crane

Ex Output:
hoist


Ex Input:
Category: location (proximity) 
Words: adjacent, near, shut, close, neighboring

Ex Output:

shut