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: frank, concise, bun, matter of fact, fortitude

Ex Output:
bun


Ex Input:
Category: boxing terminology 
Words: apron, punch, deck, canvas, call

Ex Output:
call


Ex Input:
Category: food 
Words: goodies, sausage, frank, bold, entree

Ex Output:

bold