Task: Story Composition
Input (English): Premise: Bella wanted a dog. 
 Initial Context: Her mom agreed, as long as Bella cared for it all by herself. 
 Original Ending: Bella promised, so they went to the shelter and picked a dog for her. Bella walked her dog every day, and cleaned and brushed him. Bella's mom was proud of her daughter's responsibility! 
 Counterfactual Context: Her mom let her get a cat instead.
Output (English): Bella promised to care for it all by herself, so they went to the shelter and picked a cat for her. Bella walked her cat every day, and cleaned and brushed him. Bella's mom was proud of her daughter's responsibility!