Definition: 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: Mark was laying in his bed asleep. 
 Initial Context: Suddenly, he woke up with his heart pounding. 
 Original Ending: He had just had a really scary dream. For almost an hour, he was too unsettled to get to sleep. Luckily, he was able to drift back to sleep eventually. 
 Counterfactual Context: Suddenly, he woke up but everything was perfectly calm.
Output:
He realized he had just had a really scary dream. For almost an hour, he was too unsettled to get back to sleep. Luckily, he was able to drift back to sleep eventually. 