Task: Story Composition
Input (English): Premise: Little Carl wanted a new toy wagon for his birthday. 
 Initial Context: His sister, Anne, had broken his old wagon. 
 Original Ending: On his birthday, Carl opened his presents, but there was no wagon. Anne came around the corner of the house with one last gift. Anne had bought Carl a new wagon. 
 Counterfactual Context: His sister, Anne, had fixed his old wagon.
Output (English): On his birthday, Carl opened his presents, but there was new wagon. Anne came around the corner of the house with one last gift. Anne had brought Carl the fixed wagon.