Task: Story Composition
Input (English): Premise: John was turning 25 today. 
 Initial Context: He got a large package in the mail. 
 Original Ending: It was a present from his parents. His parents sent him a brand new computer! John called his parents and thanked them. 
 Counterfactual Context: He got a small package in the mail.
Output (English): It was a present from his parents. His parents sent him a brand new watch! John called his parents and thanked them.