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.

Ex Input:
Premise: Jennifer and Siri are best friends. 
 Initial Context: Tonight they are having a sleepover. 
 Original Ending: They thought it would be fun to see how much soda they could drink. They stayed up all night drinking soda and eating junk. The next morning they had terrible stomach aches. 
 Counterfactual Context: Tonight they are going to the movies together.

Ex Output:
They thought it would be fun to see how much popcorn they could eat. They spent the whole movie drinking soda and eating popcorn. The next morning they had terrible stomach aches. 


Ex Input:
Premise: I play the piano. 
 Initial Context: And I practice for a piano recital every year. 
 Original Ending: I practice until I've mastered the song. Then I invite family and friends to my recital. And I play my song for them. 
 Counterfactual Context: I hate practicing it, though.

Ex Output:
My mom makes me practice until I've mastered the song. Then I invite family and friends to my recital. And I play my song for them. 


Ex Input:
Premise: Emily called the museum because her dog found dinosaur bones. 
 Initial Context: The museum sent an archaeologist to look at the bone. 
 Original Ending: The archaeologist said it was a pterodactyl bone. Emily was very excited to hear about the pterodactyl. The archaeologist called the museum to tell them what he found. 
 Counterfactual Context: The museum sent a scientist to look at the bone.

Ex Output:

The scientist said it was a pterodactyl bone. Emily was very excited to hear about the pterodactyl. The scientist called the museum to tell them what he found. 


