Task: Story Composition
Input (English): Premise: When it was 3 o'clock, I went outside. 
 Initial Context: The mailman reached in front of my house. 
 Original Ending: He had a very big package. When I opened it, I was shocked. It was a birthday present for me. 
 Counterfactual Context: A cat went in front of my house.
Output (English): He had a very big package. When I opened it, I was shocked. I realized it was just a dream