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: shady activities 
Words: truffles, lie, falsehood, wrongful, fudge
Example Output: truffles

Example Input: Category: weather 
Words: sunny, alright, deal, fair, tangle
Example Output: alright

Example Input: Category: computers 
Words: keys, file, text, format, organize
Example Output:
organize