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: Derek made a New Year's resolution to become a better batter. 
 Initial Context: He purchased a subscription to a batting practice range. 
 Original Ending: He went to it every day. A year went by, and Derek kept at it. Today Derek's able to hit the ball every time he swings. 
 Counterfactual Context: He purchased a subscription to Baseball Digest.
Student:
He read it and practiced his swing every day. A year went by, and Derek kept at it. Today Derek's able to hit the ball every time he swings. 