Task: Story Composition
Input (English): Premise: My friend is an opera singer. 
 Initial Context: She joined a program to improve her singing abilities. 
 Original Ending: The program took place in Prague. She went to Prague to participate in the program. It was a very good experience. 
 Counterfactual Context: She is retiring.
Output (English): Her retirement will move her to back Prague. She went to Prague and left the program. It was a very sad experience.