You will be given a definition of a task first, then some input of the task.
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.

Premise: Charles' rap music moniker was AK. 
 Initial Context: He didn't know someone named AK was in a popular rap group. 
 Original Ending: In a club in Los Angeles AK's group was performing on stage. Charles was there. After the show Charles changed his rapping name to Bane. 
 New ending: In a club in Los Angeles a group with a rapper called BK was performing on stage. Charles was there. After the show Charles changed his rapping name to Bane. 
Output:
He didn't like it so he changed it to BK.