Task: Story Composition
Input (English): Premise: Yesterday I was running with my friends. 
 Initial Context: We decided to run in the woods. 
 Original Ending: I ran as fast as I could. Yet before I knew I, I tripped over a log. I ended up falling flat on my face. 
 Counterfactual Context: We decided not to run in the woods.
Output (English): I ran as fast as I could. Before I knew it I get hit by a car. I ended up falling flat on my face.