Task: Story Composition
Input (English): Premise: One time I had a photography class in college. 
 Initial Context: The class required us to have a camera, but I didn't own one. 
 Original Ending: I had to rent one from the school library. Unfortunately I lost it. I had to pay the school for the camera I lost. 
 Counterfactual Context: I brought in my father's antique camera for class.
Output (English): I borrowed some books about cameras from the library. Unfortunately I lost one of them. I had to pay the school for the book I lost.