Task: Story Composition
Input (English): Premise: Paul loved cars. 
 Initial Context: He wanted to buy a new car. 
 Original Ending: One day he went to the dealership. He was able to finance a new BMW. Paul was so excited when he drove it off the lot. 
 Counterfactual Context: He only liked classic cars.
Output (English): One day he went to the dealership. He was able to finance a vintage BMW. Paul was so excited when he drove it off the lot.