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: Martin wake up in the morning with pain.
Initial Context: His tooth hurt.
Original Ending: He had to schedule an appointment with his dentist for the afternoon. Doctor changed old filling. Martin felt much better.
New ending: He had to schedule an appointment with his optometrist for the afternoon. The doctor gave him medication. Martin felt much better.

SOLUTION: His eyeball hurt.

PROBLEM: Premise: On this day in 2011, my sister in law got a new cat.
Initial Context: Her 17 year old daughter Maria wanted a second cat.
Original Ending: Her parents said they did not want one. Maria took a kitten home anyway. The parents were angry, but the cat is still there.
New ending: Her parents said they did want to. Maria took the cat to be put down. The parents were sad, the cat was not with them anymore.

SOLUTION: Today they found out that they had to put the cat down.

PROBLEM: Premise: Janice always feels lonely on Sunday because she doesn't see anyone.
Initial Context: One Sunday she decides to take her book to read at the coffee shop.
Original Ending: Although she doesn't speak with anyone, she likes being around people. She decides to spend more Sunday afternoons at the coffee shop. Janice notices that this habit makes her feel less lonely.
New ending: Although she doesn't speak with anyone, she likes being around people She decides to read a book and pretend the characters are her friends. Janice notices that this habit makes her feel less lonely

SOLUTION:
She can't walk so she's homebound, and no one ever comes to visit on that day.