Detailed Instructions: 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.
Problem:Premise: Terry took his newborn chihuahua outside to use the bathroom. 
 Initial Context: He sat down while he watched the dog play in the yard. 
 Original Ending: Suddenly, Terry saw a very large bird flying right at nis dog. Terry picked up and threw a rock at the bird right as it swooped down. The bird died on impact, and Terry's dog began to happily chew on it. 
 Counterfactual Context: He stand up while he watched the dog sleep in the yard.
Solution:
Suddenly, Terry saw a very large bird flying right at nis dog. Terry stood up and then picked up and threw a rock at the bird right as it swooped down. The bird died on impact, and Terry's dog began to happily chew on it. 