Task: Story Composition
Input (English): Premise: Jason's hair was starting to get really long. 
 Initial Context: He knew that he needed to get a haircut soon. 
 Original Ending: When he went to get a haircut, he told the barber what he wanted. The barber accidentally shaved a chunk of his hair out. Jason had to shave his head and it will take a long time to grow back. 
 Counterfactual Context: He asked his sister to cut it.
Output (English): When she agreed, he told her what he wanted. The sister accidentally shaved a chunk of his hair out. Jason had to shave his head and it will take a long time to grow back.