Task: Story Composition
Input (English): Premise: A middle-aged man went to the park for some relaxation. 
 Initial Context: He walked to the top of a large hill and looked at the scenery. 
 Original Ending: When he decided to leave, the man had a thought. Instead of walking down, he decide to roll down the hill. The man felt young again as he rolled down. 
 Counterfactual Context: He walked to the top of a large hill and looked at the scenery and decided not to roll ever again.
Output (English): When he decided to leave, the man had a thought. As he walked down, he remembered rolling down hills as a child. The man felt old as he decided not to roll down.