Task: Story Composition
Input (English): Premise: Steven's mom kept telling him all morning to hurry up. 
 Initial Context: She knew he was going to be late, if he didn't get to the bus stop. 
 Original Ending: Steven finally grabbed his lunch box as he walked out the door. Just as he turned the corner, he saw the back of the bus pull away. He had to go back home and tell his mom he missed the bus again. 
 Counterfactual Context: She knew she would never start the carpool run in time if he didn't hurry.
Output (English): Steven finally grabbed his lunch box as they walked out the door. Just as he turned the corner, he saw the back of the bus pull up. He had to go back home and tell his mom he didn't need a ride.