Task: Story Composition
Input (English): Premise: Every evening, Sam played football with his friends. 
 Initial Context: One day, Sam's football was stolen by the neighborhood bully. 
 Original Ending: Sam thought that his days of playing football were over. A nice man came along and gave Sam a brand new football. Now, Sam has a football that is better than ever. 
 Counterfactual Context: One day, Sam was given a new football by a neighborhood friend.
Output (English): Sam thought that his days of playing football were over when he lost his ball though. A nice man came along and gave Sam a brand new football. Now, Sam has a football that is better than ever.