Task: Story Composition
Input (English): Premise: Walter was worried because his dog was showing a lot of aggression. 
 Initial Context: The dog recently began snapping at other dogs and even people. 
 Original Ending: Walter consulted with his veterinarian. The vet discovered that the dog was suffering a flea infestation. Some medication got rid of the fleas and the dog's bad mood, too. 
 New ending: Walter consulted with his veterinarian. The vet discovered that the dog was suffering a flea infestation. Some medication got rid of the fleas and the dog's bad mood, too. 
Output (English): The dog recently began ignoring at other dogs and even people.