Task: Story Composition
Input (English): Premise: The beach was far from the dock, so they were renting a car. 
 Initial Context: The cab took them to the car rental agency. 
 Original Ending: They drove the rental through the town until they got to a steep road. The small car would not go up the hill so they backed down. They returned the car to the agency and took the cab to the beach. 
 Counterfactual Context: The car rental agency had no more cars available.
Output (English): They rented bikes and rode through the town until they got to a steep road. The small bikes would not go up the hill so they backed down. They returned the bikes to the agency and took the cab to the beach.