Once, there was a primary school with a lot of children doing the sessions fabulously quiet and listening attentively to the professors.At break time they read a book with a diamond on top of the book.Then,something sad happened and they were really upset.all the books were lost.Guess were it was? On a road with a lot of cars.After that, everyone was joyful because someone saw all those books,so he decided sprinting at the books to give it to the owners.