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: The boys were pumped.
Initial Context: They were finally going to go see the band in concert.
Original Ending: It had been advertised for a while and the day was finally here. They loaded up in the car and took off to the venue. The band played all night and they loved every minute of it.
New ending: It had been advertised for a while and the day was finally here. They got in the car and went to the record store. The they listened to the CD in the car and they loved every minute of it.

SOLUTION: They were finally going to listen to the band's new CD.

PROBLEM: Premise: Jim and Mary took a walk together at night.
Initial Context: They had been dating for a few weeks so this wasn't a new activity.
Original Ending: All of a sudden a clown burst out of a building shouting run! They ran away from the clown and the building as it crumbled. They were afraid of clowns after that.
New ending: All of a sudden the mugger burst out a of a scream. They ran from the muggers into a building. They were afraid of the streets after that.

SOLUTION: They were stopped by a couple of muggers.

PROBLEM: Premise: Jason climbed onto the kitchen counter.
Initial Context: He was trying to reach the cookie jar.
Original Ending: The jar tumbled off of the shelf and crashed to the floor. Jason's mother ran into the kitchen. She wasn't angry, just thankful that Jason wasn't hurt.
New ending: The bag tumbled off the shelf and fell into the floor. Jason picked the bag from the floor. Luckily the bag was still closed.

SOLUTION:
He was trying to reach a bag of chips.