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: secretary duty 
Words: organize, sort mail, fax, file, text
Example Output: text

Example Input: Category: location (proximity) 
Words: beside, close, steady, nearest, nearer
Example Output: steady

Example Input: Category: animal 
Words: cow, fish, dog, sea turtle, hunt
Example Output:
hunt