Task: Story Composition
Input (English): Premise: Shana came home from work one afternoon. 
 Initial Context: She fumbled in her purse for her keys. 
 Original Ending: But she couldn't find them - she had lost them somewhere! Shana grasped under the magnetic rock on her stoop. There, she found her spare key and let herself in. 
 Counterfactual Context: The door was wide open.
Output (English): She didn't need to find her keys - the door was open somehow! Shana grasped under the magnetic rock on her stoop. There, she didn't find the spare key and knew someone had let themselves in.