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: physical property 
Words: large, obese, fat, chunky, fiber

Ex Output:
fiber


Ex Input:
Category: widespread 
Words: boring, common, soldier, general, average

Ex Output:
soldier


Ex Input:
Category: geographical property 
Words: even, smooshed, plain, valley, flat

Ex Output:

even