Task: Story Composition
Input (English): Premise: David invited his friends over during their first day of summer break. 
 Initial Context: The kids excitedly changed into swimsuits. 
 Original Ending: David and his mom filled lots of balloons with water. The kids laughed as they brought out a giant bucket of balloons. At once, they began grabbing for balloons and throwing them! 
 Counterfactual Context: The kids excitedly gathered around the television to watch a superhero movie.
Output (English): David and his mom filled lots of balloons with water after the movie. The kids laughed as they brought out a giant bucket of balloons. At once, they began grabbing for balloons and throwing them outside.