Task: Story Composition
Input (English): Premise: Horatio had always wanted to learn how to swim. 
 Initial Context: He was the only one of his friends who didn't know how. 
 Original Ending: One summer he decided to take swimming lessons. Finally at the end of the summer he was a confident swimmer. Horatio was glad he had learned how to swim. 
 New ending: One summer he decided to give them all swimming lessons. Finally at the end of the summer his friends were confident swimmers. Horatio's friends were glad he had taught them how to swim. 
Output (English): He was the only one of his friends who knew how to swim well.