Task: Story Composition
Input (English): Premise: Kelsi and her sister Quinn were waiting after school. 
 Initial Context: Their mom was supposed to come and get them. 
 Original Ending: The girls were waiting for two hours. No one came. By the time they were picked up, it had been three hours. 
 Counterfactual Context: Their mom was waiting for her at home.
Output (English): Their mom was waiting for two hours. The girls hadn't come home on time. By the time their mom finished yelling, it had been three hours.