TASK DEFINITION: Given a premise, an initial context, an original ending, and a new ending, the task is to generate the counterfactual context that is aligned with the new ending. 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. The original ending is the last three sentences of the story. Also, you are given a new ending that can provide the new story with the same premise. You should write a counterfactual context to explain the small differences between the original and new endings. More specifically, a story context contains the general plot of the story. And a counterfactual context is a slight modification to the initial context. To sum up, you should write the second sentence of a story based on the premise(first sentence) and the new ending(last three sentences) of the story.
PROBLEM: Premise: Kelley was so excited to get her new bike. 
 Initial Context: As soon as she got it, she immediately used it. 
 Original Ending: She rode it all around the park. Unfortunately she got it lost. Luckily after an hour, she found it. 
 New ending: She was in the park so it was a long way. Unfortunately she got lost. Luckily after an hour she found her way home soaked. 

SOLUTION: She rode is down the street and it began raining hard so she had to go back home.

PROBLEM: Premise: Bailey always wanted to have long hair. 
 Initial Context: Bailey tried all sorts of hair growth treatments to grow her hair. 
 Original Ending: However, none of those treatments worked effectively. Bailey decided the best way to have long hair is to get a weave. Bailey was pleased with her longer hair, even if it was not hers. 
 New ending: However, this treatment was expensive, despite working effectively. Bailey decided she would keep paying the cost to have long hair. Bailey was pleased with her longer hair, even if the treatment was expensive. 

SOLUTION: Bailey found a hair growth treatment that worked wonders.

PROBLEM: Premise: Jill was very conscientious about her oral health. 
 Initial Context: She used the same type of toothbrush every day. 
 Original Ending: She noticed one day the blue in her toothbrush was fading. Jill went to the store later to pick up a new one but they were out. She wound up buying a new type of toothbrush and she liked it more. 
 New ending: She noticed one day the blue in today's toothbrush was fading. Jill went to the store later to complain they'd given her a used toothbrush. She wound up buying a new type of toothbrush and she liked that it was actually new. 

SOLUTION:
She used a new toothbrush every day.

