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: Lana loved horses. 
 Initial Context: So she saved money for horseback riding lessons. 
 Original Ending: She was ecstatic when she approached her teacher and horse. But when she started to get on the horse, she became really scared. And after a few minutes, she didn't want to ride anymore. 
 Counterfactual Context: So she saved money and bought herself 2 horses.
Student:
She was ecstatic when she approached her new horses. But when she started to get one of the horses, she became really scared. And after a few minutes, she didn't want to ride it anymore. 