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: Years ago, two countries were both determined to reach space. 
 Initial Context: Each wanted to beat the other. 
 Original Ending: One country managed to put a satellite and a person in space first. However, the other country managed to put a man on the moon first. Now, the two countries cooperate in matters of space exploration. 
 Counterfactual Context: They decided to collaborate.
Solution:
They managed to put a satellite in space. Then they managed to put a man on the moon. The two countries still cooperate in matters of space exploration. 