% likes(W, X, Y, Z): person W likes pizzas with X crust, Y cheese, and Z topping
likes(authur,thin,mozzarella,pepperoni).
likes(authur,thin,mozzarella,onion).
likes(authur,thin,parmesan,pepperoni).
likes(authur,thin,parmesan,onion).
likes(authur,handtossed,mozzarella,pepperoni).
likes(authur,handtossed,mozzarella,onion).
likes(authur,handtossed,parmesan,pepperoni).
likes(authur,handtossed,parmesan,onion).
likes(ford,handtossed,cheddar,pepperoni).
likes(ford,handtossed,cheddar,pepper).
likes(ford,handtossed,parmesan,pepperoni).
likes(ford,handtossed,parmesan,pepper).
likes(ford,deepdish,cheddar,pepperoni).
likes(ford,deepdish,cheddar,pepper).
likes(ford,deepdish,parmesan,pepperoni).
likes(ford,deepdish,parmesan,pepper).
likes(zaphod,thin,cheddar,pepperoni).
likes(zaphod,thin,cheddar,sausage).
likes(zaphod,thin,cheddar,pepper).
likes(zaphod,thin,mozzarella,pepperoni).
likes(zaphod,thin,mozzarella,sausage).
likes(zaphod,thin,mozzarella,pepper).
likes(zaphod,handtossed,cheddar,pepperoni).
likes(zaphod,handtossed,cheddar,sausage).
likes(zaphod,handtossed,cheddar,pepper).
likes(zaphod,handtossed,parmesan,pepperoni).
likes(zaphod,handtossed,parmesan,sausage).
likes(zaphod,handtossed,parmesan,pepper).
likes(zaphod,deepdish,cheddar,pepperoni).
likes(zaphod,deepdish,cheddar,sausage).
likes(zaphod,deepdish,cheddar,pepper).
likes(zaphod,deepdish,parmesan,pepperoni).
likes(zaphod,deepdish,parmesan,sausage).
likes(zaphod,deepdish,parmesan,pepper).
likes(trillian,handtossed,cheddar,none).
likes(trillian,handtossed,cheddar,pepperoni).
likes(trillian,handtossed,cheddar,sausage).
likes(trillian,handtossed,cheddar,onion).
likes(trillian,handtossed,mozzarella,none).
likes(trillian,handtossed,mozzarella,pepperoni).
likes(trillian,handtossed,mozzarella,sausage).
likes(trillian,handtossed,mozzarella,onion).
likes(trillian,handtossed,parmesan,none).
likes(trillian,handtossed,parmesan,pepperoni).
likes(trillian,handtossed,parmesan,sausage).
likes(trillian,handtossed,cheddar,onion).