Task: Story Composition
Input (English): Premise: Jennifer and Siri are best friends. 
 Initial Context: Tonight they are having a sleepover. 
 Original Ending: They thought it would be fun to see how much soda they could drink. They stayed up all night drinking soda and eating junk. The next morning they had terrible stomach aches. 
 Counterfactual Context: Tonight they are going to the movies together.
Output (English): They thought it would be fun to see how much popcorn they could eat. They spent the whole movie drinking soda and eating popcorn. The next morning they had terrible stomach aches.