Given the task definition and input, reply with output. 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.

Premise: An barn owl used to live in the tree in our yard. 
 Initial Context: At night, the owl would fly from its perch. 
 Original Ending: It swooped over the yard looking for mice. The owl would catch mice for its babies. Eventually we cut down the tree, and the owl left. 
 Counterfactual Context: It hadn't been there for many nights though.

It would swoop over the yard looking for mice. The owl would catch mice for its babies. Eventually we had to cut down the tree, and that's why the owl left. 