Task: Story Composition
Input (English): Premise: Buffy signed up for a drawing class at the local community college. 
 Initial Context: She had all her supplies with her as she headed to the first class. 
 Original Ending: When she got there, she noticed a man standing on a platform. The teacher introduced the man as the model for the class. He stood up and dropped his robe, revealing he was naked! 
 Counterfactual Context: The first day of class, her teacher was out sick.
Output (English): When she got there, she noticed a man standing in her place. The substitute teacher introduced the man as the model for the class. He stood up and dropped his robe, revealing he was naked!