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: location (proximity) 
Words: beside, closest, close, adjacent, shut

Ex Output:
shut


Ex Input:
Category: physical property 
Words: large, obese, fat, chunky, fiber

Ex Output:
fiber


Ex Input:
Category: food 
Words: integrity, grub, wiener, frank, provision

Ex Output:

integrity