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: boats 
Words: lifeline, stern, fold, deck, rudder
Example Output: fold

Example Input: Category: emotional status 
Words: alright, alert, fine, detached, level
Example Output: level

Example Input: Category: date status 
Words: current, timely, prompt, drink, do tests
Example Output:
drink