Task: Story Composition
Input (English): Premise: Cheryl had a headache. 
 Initial Context: She took some Tylenol. 
 Original Ending: An hour later, it was not better. She took a nap. She felt better when she woke up. 
 Counterfactual Context: She took balm.
Output (English): An hour later, it was not better, so the balm wasn't working. She took a nap. She felt better when she woke up.