Task: Story Composition
Input (English): Premise: My cell phone bill is way too expensive. 
 Initial Context: Currently it is over one hundred dollars a month. 
 Original Ending: I have noticed many ads stating that they can cut my bill in half. My brother switch phone providers and has saved a lot of money. I think today I will switch to his provider too. 
 Counterfactual Context: Currently it is only $20 a month.
Output (English): I have noticed many ads stating that they can cut my bill in half. My brother switch phone providers and has saved a lot of money. I don't think his provider can save me money though.