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: The beach was far from the dock, so they were renting a car. 
 Initial Context: The cab took them to the car rental agency. 
 Original Ending: They drove the rental through the town until they got to a steep road. The small car would not go up the hill so they backed down. They returned the car to the agency and took the cab to the beach. 
 Counterfactual Context: The car rental agency had no more cars available.
Student:
They rented bikes and rode through the town until they got to a steep road. The small bikes would not go up the hill so they backed down. They returned the bikes to the agency and took the cab to the beach. 