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: He set up his easel in position, oil paints ready to go. 
 Initial Context: The painting competition was about to begin. 
 Original Ending: He only took ten minutes to complete the competition. I eagerly moved towards him to witness the artwork. It was the mirror image of my lips. 
 Counterfactual Context: The painting class was about to begin.
He only took ten minutes to complete the work for the class. The teacher eagerly moved towards him to witness the artwork. It was the mirror image of his lips. 