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: bird 
Words: swift, tackle, pelican, crane, hoist

Ex Output:
hoist


Ex Input:
Category: physical property 
Words: bulky, skinny, carbs, absorption, fat

Ex Output:
carbs


Ex Input:
Category: corporate 
Words: amalgamated, firm, streamline, inflexible, llc

Ex Output:

inflexible