Task: Story Composition
Input (English): Premise: Tom was driving his car and had a flat tire. 
 Initial Context: He pulled his car over to the side of the road. 
 Original Ending: He got the spare tire out and started to change the tire. A stranger stopped to help him. Together they put the spare tire on the car. 
 New ending: His friend had got the spare tire out and started to change the tire. After his friend had stopped to help him. Together they had put the spare tire on the car. 
Output (English): He didn't have a spare tire and had to call a friend.