Task: Story Composition
Input (English): Premise: Daryl skipped across the stones poking out of the water. 
 Initial Context: He laughed back at us, standing on the shoreline. 
 Original Ending: We were frightened of the fast moving river. Daryl should have been, too. He lost his footing on a slick rock, and drowned. 
 Counterfactual Context: He warned us about coming across, it was scary.
Output (English): We were frightened of the fast moving river. Daryl was trying to be careful. He lost his footing on a slick rock, and drowned.