Task: Story Composition
Input (English): Premise: Mike drove down the left lane. 
 Initial Context: A car approached him from behind. 
 Original Ending: Mike got in the left lane to let the car pass. The driver in the car passed Mike. He waved at Mike as he passed. 
 Counterfactual Context: He moved over to avoid a cop car parked on the curb.
Output (English): Mike stayed in the left lane to let a car pass. The driver in the car passed Mike. He waved at Mike as he passed.