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.

Example Input: Category: animals 
Words: duck, jog, cat, pig, mallet
Example Output: jog

Example Input: Category: chocolate food 
Words: brownie, cake, fudge, banned, molasses
Example Output: banned

Example Input: Category: widespread 
Words: standard, general, regular, universal, commander
Example Output:
commander