Task: Story Composition
Input (English): Premise: John decided he wanted to make a positive change in his life. 
 Initial Context: He decided to take up a healthy hobby. 
 Original Ending: He decided to get into cycling. He bought a good bicycle. He had fun riding the various trails around town. 
 Counterfactual Context: He decided to lift weights at the gym.
Output (English): He joined a gym. He bought workout clothes. He had fun lifting weights at the gym.