Task: Story Composition
Input (English): Premise: The first snow came while the kids were in school. 
 Initial Context: When they walked out the ground was covered. 
 Original Ending: The oldest decided to roll up a ball and throw it. Once that started, a snowball fight broke out. The kids had the best time ever. 
 Counterfactual Context: When they walked out the snow was melted already.
Output (English): The oldest wanted to roll up  a ball and throw it. A snowball fight would have been fun. The kids vowed next time it snowed, they would have the best snowball fight ever.