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: Barry couldn't figure out where his one cat was. 
 Initial Context: They had just painted their living room and a vent cover was off. 
 Original Ending: He thought he heard noises from the ducts but he didn't see anything. He put the cover back on and started to walk away. He then heard more noises and realized that the cat was in there. 
 Counterfactual Context: They had just painted their living room and the back door was open.
Student:
He thought he heard noises from behind him but he didn't see anything. He put the paint pail away and started to walk away. He then heard more noises and realized that the cat was out there. 