Task: Story Composition
Input (English): Premise: Anna had a flat tire. 
 Initial Context: She tried calling for help, but her cell phone was dead! 
 Original Ending: She could not find a pay phone anywhere. Luckily, a passerby lent her his cell phone to call for help. Soon a tow service came to help repair Anna's tire. 
 Counterfactual Context: She tried calling for help on her cell phone and help immediately arrived.
Output (English): She was able to make the call just before her battery died, which was good because she could not find a pay phone anywhere. Luckily, a passerby stayed with her while she waited. Soon a tow service came to help repair Anna's tire.