Task: Story Composition
Input (English): Premise: Evan was at the cabin with his grandparents. 
 Initial Context: His grandma was making him some hot chocolate. 
 Original Ending: He found a bag of marshmallows and asked for some. She told him no, because they were old and stale. Evan didn't get it, but he didn't complain. 
 Counterfactual Context: His grandma made him some hot chocolate with marshmallows.
Output (English): He found a bag of cookies and asked for some. She told him no, because they were old and stale. Evan didn't get it, but he didn't complain.