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: personal characteristic 
Words: assured, refreshing, unruffled, cool, positive
Example Output: refreshing

Example Input: Category: emotional status 
Words: ashamed, down, emotional upsets, disgusted, ground
Example Output: ground

Example Input: Category: shady activities 
Words: falsification, unlicensed, chocolate, replace, fudge
Example Output:
chocolate