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: fish, iguana, canyoning, hamster, horse

Ex Output:
canyoning


Ex Input:
Category: aesthetic characteristic 
Words: 70, variety, color, fair, light

Ex Output:
70


Ex Input:
Category: boxing terminology 
Words: deck, punch, blocking, suits, canvas

Ex Output:

suits