Task: Story Composition
Input (English): Premise: Our pet dog was weighed at the vet yesterday. 
 Initial Context: It's five pounds overweight. 
 Original Ending: The veterinarian said if he continues to gain it will be unhealthy. We don't want to risk any health problems. We put him on a healthy diet immediately. 
 New ending: The veterinarian said if he continues to lose it will be unhealthy. We don't want to risk any health problems. We put him on a heftier diet immediately. 
Output (English): It's five pounds underweight.