Teacher: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.
Teacher: Now, understand the problem? Solve this instance: Premise: Nick, Bob, Sam, and Don went to a rock show in Philadelphia last week.
Initial Context: They found their seats with help from an usher.
Original Ending: The group then searched for the merchandise booth. Three of them bought vinyl records. They returned to their seats to watch the rest of the show.
New ending: The group didn't bother searching for the merchandise booth. If they had money, they would have bought vinyl records. They stayed in their seats to watch the rest of the show.
Student:
They didn't have any extra money to buy merchandise.