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.

Ex Input:
Category: social gathering 
Words: picnic, french toast, clan, club, bar

Ex Output:
french toast


Ex Input:
Category: type of sandwich 
Words: submarine, burger, bar, lettuce, club

Ex Output:
bar


Ex Input:
Category: police punishment 
Words: fine, firstrate, ticket, money, handsome

Ex Output:

handsome