%book(Title,Price,Isbn)
book('Artificial Intelligence: A Modern Approach',111,'0136042597').
book('Paradigms of Artificial Intelligence Programming', 83, '1-55860-191-0').
book('Seven Languages in Seven Weeks',35,'9781934356593').


%book_author(Isbn,Firstname,Lastname).
author('0136042597','Stuart','Russell').
author('0136042597','Peter','Norvig').
author('1-55860-191-0','Peter','Norvig').
author('9781934356593','Bruce','Tate').

