Detailed 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.
Problem:Premise: Bryan went to the dentist for the first time in years. 
 Initial Context: He figured that it would be okay because he had brushed well. 
 Original Ending: The dentist announced that Bryan had several cavities. Bryan was completely surprised. He had to have everything filled. 
 Counterfactual Context: He was relieved when the dentist said his teeth were perfect.
Solution:
The dentist announced that Bryan took wonderful care of his teeth. Bryan was completely surprised. He booked an appointment to return in a year. 