Task: Story Composition
Input (English): Premise: George was playing at the park. 
 Initial Context: He decided to play on the monkey bars. 
 Original Ending: George lost his grip and slipped. He fell onto the sand under him. George bruised his elbow, but he was fine. 
 Counterfactual Context: He decided to play in the grass.
Output (English): George lost his balance and slipped. He fell onto the grass under him. George bruised his elbow, but he was fine.