Instructions: Given a premise, an initial context, an original ending, and a counterfactual context, the task is to generate a new story ending aligned with the counterfactual context and as close to the original ending as possible. Each instance consists of a five-sentence story. The premise is the first sentence of a story, and the second sentence, which is the initial context, provides more information about the story's context and the story's general plot. The original ending is the last three sentences of the story. Also, a counterfactual context is a slight modification to the initial context. You should write a new story ending that edits the original story ending as little as possible to regain coherence with the counterfactual context. To sum up, you should write the last three sentences of a story based on the premise(first sentence) and the counterfactual context(second sentence) of the story.
Input: 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:
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. 