Task: Story Composition
Input (English): Premise: Tom and Mary shared a car. 
 Initial Context: One day, Tom drove the car to run an errand. 
 Original Ending: Mary needed the car to go to school, but the car was not available. Mary was angry at Tom. Tom bought himself a car. 
 New ending: Mary needed the car to go to school, and the car was available. Mary was happy with Tom. Tom bought himself a new helmet. 
Output (English): One day, Tom rides a bike to run an errand.