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: police punishment 
Words: acceptable, fine, hearing, jail time, probation
Example Output: acceptable

Example Input: Category: type of sandwich 
Words: clan, lettuce, bacon, club, submarine
Example Output: clan

Example Input: Category: card games 
Words: slapjack, uno, brandy, poker, gin
Example Output:
brandy