Sentence 1: Oswald decided to take his backpack to school. 
 Sentence 3: As he walked to school, his backpack ripped 
 Sentence 4:  His books and his lunch spilled out on the ground 
 Sentence 5:  Oswald had to buy new books, more food, and a new backpack 
 Given Sentence 2: He put his books and his lunch in his backpack.