Task: Story Composition
Input (English): Premise: A man walked down the street and stopped to take out his phone. 
 Initial Context: Suddenly a robber appeared and demanded the phone. 
 Original Ending: The man asked the robber what would happened if he didn't comply. Without saying anything, the robber brandished a gun. The man thought he was bluffing so he ran away. 
 Counterfactual Context: Suddenly a police officer appeared and demanded the phone.
Output (English): The man asked the officer what would happened if he didn't comply. Without saying anything, the officer brandished a gun. The man thought he was bluffing so he ran away.