Task: Story Composition
Input (English): Premise: My brother owned a dog named Rocky. 
 Initial Context: One day a smaller dog wandered into my brother's yard. 
 Original Ending: Rocky ran over and fought the smaller dog. The smaller dog defeated Rocky. Rocky does not fight any more. 
 Counterfactual Context: One day a larger dog wandered into my brother's yard.
Output (English): Rocky ran over and fought the larger dog. The larger dog defeated Rocky. Rocky does not fight any more.