Task: Story Composition
Input (English): Premise: Sandra had always wanted a puppy. 
 Initial Context: Her parents knew this and had a plan. 
 Original Ending: After picking her up from school they went to the animal shelter. Sandra was completely surprised. They picked up a new puppy and Sandra was so happy. 
 New ending: After picking her up from school they went to the animal shelter. Sandra was completely confused. They picked up a new kitten and Sandra was still happy. 
Output (English): Her parents thought she wanted a kitten.