Task: Story Composition
Input (English): Premise: Johnny was an elementary school student. 
 Initial Context: He wanted a dog like his neighbor had. 
 Original Ending: His mother said he could have a cat. John got a cat and loved the cat very much. The cat made John very happy growing up. 
 Counterfactual Context: He hated cats after seeing the one his neighbor had.
Output (English): He wanted a dog and his mother said he could have one. John got a dog and loved it very much. The dog made John very happy growing up.