Task: Story Composition
Input (English): Premise: The library was closing. 
 Initial Context: Gina grabbed the book she'd been reading so she could check it out. 
 Original Ending: The librarian wouldn't let her because she had an overdue book. Gina wasn't done reading that one yet. She had to leave her new book and go home empty handed. 
 Counterfactual Context: Gina got locked in overnight.
Output (English): The librarian didn't see her because she had been in the back. Gina wasn't done reading before closing. She had to sleep there with her new book and go home tomorrow.