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.
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Question: Premise: Last night I had a dream.
Initial Context: I dreamed I was back at work.
Original Ending: I saw a locomotive driving by and took photos. Then I helped load up a truck. I woke up to find myself back to reality, stroke ridden.
New ending: I saw a locomotive driving by and took photos. Then I helped load up a truck. I woke up to find myself back to reality, stroke ridden.

Answer: I dreamed I was flying.

Question: Premise: Sam hoped it would snow for Christmas, but it was so warm!
Initial Context: Already it was mid-December and still fifty degrees.
Original Ending: The days grew shorter but no colder. On Christmas Eve he went to bed unhappily, expecting a warm Christmas. But when he woke in the morning, the ground was covered in snow!
New ending: The days grew shorter but no colder. On New Year's Eve he went to bed unhappily, expecting a warm January. But when he woke in the morning, the ground was covered in snow!

Answer: Christmas came and it was hot as well.

Question: Premise: Tom had an upcoming test.
Initial Context: He studied very hard for the test.
Original Ending: The night before the test, he forgot to set his alarm clock. By the time he woke up, the test was already over. Tom failed the test.
New ending: Unfortunately he got in an accident on the way to school. By the time he took care of it and got to school the test was already over. His teacher didn't believe him so Tom failed the test.

Answer:
He studied very hard for the test and woke up on time the next morning to go the exam.