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: Biff liked to be a bully at school. 
 Initial Context: He would always push people around. 
 Original Ending: One day he pushed the wrong person. It was Tim who he pushed that day. Biff got a black eye because of his actions. 
 Counterfactual Context: Biff was really a coward and when he picked on one guy, the guy's girlfriend knocked the crap out of him with karate.
Student:
One day he pushed the wrong person. It was a girl who he pushed that day. Biff got a detention because of his actions. 