Task: Story Composition
Input (English): Premise: My sister in law has a family tradition. 
 Initial Context: She calls her sisters on their birthdays. 
 Original Ending: She has her daughters sing Happy Birthday. This year she stopped, as both daughters are in college. Nobody missed the tradition. 
 Counterfactual Context: She calls her sisters on Christmas.
Output (English): She has her daughters sing "Jingle Bells." This year she stopped, as both daughters are in college. Nobody missed the tradition.