Task: Story Composition
Input (English): Premise: The drama teacher was casting for roles in the school play. 
 Initial Context: A veteran of school plays, Sarah was confident she'd get the part. 
 Original Ending: She quickly learned the lines for the audition. At try-outs, Sarah heard a girl say the part meant the world to her. Everyone was surprised when Sarah fumbled the lines for the lead role. 
 Counterfactual Context: A veteran of school plays, Sarah didn't need to try out.
Output (English): She quickly learned the lines for her new role. At practice, Sarah heard a girl say the part meant the world to her. Everyone was surprised when Sarah fumbled the lines for the lead role.