Task: Story Composition
Input (English): Premise: Nell looked forward to a visit from the book mobile. 
 Initial Context: She found a cozy spot to read in the back of the mobile library. 
 Original Ending: Soon, Nell was lost in the plot of the book. She didn't hear the engine start or notice the book mobile moving. When Nell finished her story, she found she was far from home. 
 Counterfactual Context: The book mobile was too full so she went back home.
Output (English): She went back the next day and got lost in the plot of the book. She didn't hear the engine start or notice the book mobile moving. When Nell finished her story, she found she was far from home.