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: moral characteristic 
Words: wiener, frank, integrity, loyalty, stern

Ex Output:
wiener


Ex Input:
Category: emotional status 
Words: nervous, frustrated, fret, jack, concerned

Ex Output:
jack


Ex Input:
Category: type of rigidity 
Words: unbending, firm, stiff, resistant, streamline

Ex Output:

streamline