Task: Story Composition
Input (English): Premise: Bill was riding his bike down the street. 
 Initial Context: He rolled to a stop sign, but didn't stop. 
 Original Ending: A car was passing through the intersection. Bill's bike hit the tail end of the car. Bill had to be hospitalized for a week. 
 Counterfactual Context: His car had recently broke down and he had no choice but to ride his bike to work.
Output (English): A car had been passing through the intersection and clipped him. Bill's bike had hit the tail end of the car. Bill had to be hospitalized for a week after that.