Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Premise: Marvin joined the military shortly after graduating from high school. 
 Initial Context: At his first duty station he met Sarah, she was lovely. 
 Original Ending: Shortly after meeting her she was sent overseas by the military. Marvin was very lonely for the entire time that she was away. Upon her return Marvin was elated and asked Sarah to marry him. 
 Counterfactual Context: At his first duty station he met Bob and Joe, who became his pals.
Student:
Shortly after meeting them he was sent overseas by the military. Marvin was very lonely for the entire time that he was away. Upon his return Marvin was elated. 