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: Ben's car was behaving strangely. 
 Initial Context: He took it into the repair shop. 
 Original Ending: There, the mechanic said he needed a new transmission. Ben sadly forked over $1100 for the repair. Afterwards, at least, his car ran smoothly once again. 
 Counterfactual Context: He bought a new car.
Student:
The mechanic said his old car needed a new transmission. Ben wasn't going to pay over $1100 for the repair. Afterwards, Ben is happy that his new car is running smoothly. 