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: Billy always likes beef jerky. 
 Initial Context: Every Christmas his stocking is full of candy. 
 Original Ending: But he would rather have jerky inside it. This past year he begged for jerky instead of candy. His stocking had 5 pounds of beef jerky waiting for him this year. 
 Counterfactual Context: Since he kept kosher, he was glad to learn that it did not violate any dietary laws.
Student:
But he will not rather have jerky inside it. This past year he avoided jerky. His has avoided 5 pounds of beef jerky this year. 