Task: Story Composition
Input (English): Premise: Darius went to the beach with his friends. 
 Initial Context: There was a shark warning. 
 Original Ending: Darius decided to ignore the warning. Sure enough, a shark attacked Darius. Darius lived but had to have his leg amputated. 
 Counterfactual Context: There was a jellyfish warning.
Output (English): Darius decided to ignore the warning. Sure enough, a jellyfish attacked Darius. Darius lived but had to have his leg treated.