Task: Story Composition
Input (English): Premise: Nina wanted to play ball. 
 Initial Context: She called her friends, but they were all busy. 
 Original Ending: Then she decided to ask her little brother. He eagerly agreed to play with her. Nina and her brother had a great time playing ball! 
 Counterfactual Context: She called her friends, and they asked her to come right over.
Output (English): Then she decided to ask her little brother. He eagerly agreed to play with them. Nina and her brother had a great time playing ball with Nina's friends.