Task: Story Composition
Input (English): Premise: Sue wanted to get in shape. 
 Initial Context: She signed up for the half marathon. 
 Original Ending: Sue ran everyday after work. Sue was eventually able to run for miles at a time. She was able to successfully complete the half marathon. 
 Counterfactual Context: She started lifting weights.
Output (English): Sue also ran everyday after work. Sue was eventually able to run for miles at a time. She was able to successfully complete a half marathon.