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: emotional status 
Words: down, melancholy, below, loveful, kind
Example Output: below

Example Input: Category: food 
Words: frank, entree, goodies, concise, wiener
Example Output: concise

Example Input: Category: aesthetic characteristic 
Words: fine, high quality, alert, exquisite, neat
Example Output:
alert