Task: Story Composition
Input (English): Premise: The fleet of ships advanced towards the island. 
 Initial Context: A submarine snuck up on them. 
 Original Ending: The submarine fired a torpedo at one of the ships. The ship exploded. The other ships in the fleet scattered. 
 Counterfactual Context: A pirate ship snuck up on them.
Output (English): The pirates boarded and pillaged one of the ships. The ship sank. The other ships in the fleet scattered.