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: weather 
Words: cold, 70, fair, well, luke
Example Output: well

Example Input: Category: social gathering 
Words: group, dance hall, clan, club, dagwood
Example Output: dagwood

Example Input: Category: aesthetic characteristic 
Words: fair, dishonest, variety, flaxen, even
Example Output:
dishonest