Task: Story Composition
Input (English): Premise: Gary's grandfather would drive Gary to school. 
 Initial Context: His grandfather was a terrible driver. 
 Original Ending: He would drive too fast and run stop signs. Gary was afraid to ride with his grandfather. Gary decided to ride his bike to school. 
 New ending: He would drive the speed limit and stop at stop signs. Gary liked to ride with his grandfather. Gary decided not to ride his bike to school. 
Output (English): His grandfather was an excellent driver.