Task: Story Composition
Input (English): Premise: I fed my dog some pork. 
 Initial Context: Alas, the pork did not agree with his stomach. 
 Original Ending: My dog threw up the food. Luckily, his sickness ended after one day. However, I realized that I needed to be careful about feeding my dog. 
 Counterfactual Context: He liked the pork dog food a lot.
Output (English): But my dog threw up the food. Luckily, his sickness ended after one day. However, I realized that I needed to be careful about feeding my dog.