Task: Story Composition
Input (English): Premise: Bill decided to ride his bicycle to school. 
 Initial Context: On the way there, he got a flat tire. 
 Original Ending: A man saw Bill's flat tire and stopped his car. The driver offered to drive Bill to school. Bill made it to school on time. 
 Counterfactual Context: On the way there, he had a pleasant ride.
Output (English): A man saw Bill and waved at him. The driver offered to drive Bill to school but Billy declined. Bill made it to school on time.