Task: Story Composition
Input (English): Premise: When Ron was 10, he got a hamster for his birthday. 
 Initial Context: One day, he was holding the hamster in his hand. 
 Original Ending: The hamster bit his thumb, hard! Ron was surprised, and accidentally dropped the hamster. The hamster died later that day. 
 Counterfactual Context: One day, he put a treat in the hamster's cage.
Output (English): The hamster bit his thumb, hard! Ron was surprised, and accidentally knocked the hamster cage over. The hamster died later that day.