Q: 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: North Carolina played Notre Dame Sunday night in basketball. 
 Initial Context: Carolinna built a huge lead heading into the half. 
 Original Ending: Notre Dame went on a 12-0 run in the second half and took the lead. Carolina went on a 12-0 run of their own. They seized the momentum and eventually beat Notre Dame 88-74. 
 New ending: Notre Dame stayed strong in the second half and kept the lead. Carolina went on a 12-0 run and fought back some of the difference. They seized the momentum and eventually beat Notre Dame 88-74. 
A:
Notre Dame had built a huge lead heading into the half.