Task: Story Composition
Input (English): Premise: Ben hated running. 
 Initial Context: He could never understand why people ran marathons. 
 Original Ending: Ben met a girl that loved to run. She made Ben promise to run in a marathon together. Today, Ben is running in his very first marathon. 
 Counterfactual Context: He decided to never run another marathon.
Output (English): Ben met a girl that loved to bike. She made Ben promise to do the Tour de France together. Today, Ben is cycling in his very first Tour de France.