Task: Story Composition
Input (English): Premise: Sasha thought it would be funny to play a prank. 
 Initial Context: She took down a stop sign. 
 Original Ending: It caused a bad accident. The police found out she took the sign down. She got in big trouble. 
 Counterfactual Context: She put glue on her teacher's chair.
Output (English): It caused a bad accident. The police found out she put glue on her teacher's chair. She got in big trouble.