Task: Story Composition
Input (English): Premise: Sam heard a rustling sound in the cupboard. 
 Initial Context: She assumed the mouse had returned. 
 Original Ending: She set out a trap with a dab of peanut butter and waited. Sam heard a loud snap. She tossed the dead mouse into the trash. 
 Counterfactual Context: She assumed her son was hiding there.
Output (English): She found out it was a mouse and not her son so she laid down a trap. Sam heard a loud snap. She tossed the dead mouse into the trash.