Task: Story Composition
Input (English): Premise: Sarah was afraid of swimming underwater. 
 Initial Context: Her friends were all going snorkeling on Saturday. 
 Original Ending: Sarah did not want to be left out of the big snorkeling day. She decided to face her fears and she dove into the water! Looking back, Sarah wondered what she ever was afraid of. 
 Counterfactual Context: Her friends went snorkeling without her.
Output (English): Sarah did not want to be left out of the big snorkeling day. But she could not face her fears and dive into the water! Looking back, Sarah wondered what she ever was afraid of.