Task: Story Composition
Input (English): Premise: Joe was on the bus. 
 Initial Context: He was going to his seat. 
 Original Ending: He then saw and old man who needed a seat. Joe knew what to do. He let the old man sit in the seat. 
 Counterfactual Context: He forgot something so he get off from the bus.
Output (English): He got on the next bus and saw a old man who needed a seat. Joe knew what to do. He let the old man sit in the seat.