Task: Story Composition
Input (English): Premise: It was Halloween night. 
 Initial Context: Tricia was handing out candy. 
 Original Ending: All the sudden lightening struck. Tricia lost her power. She was beyond frightened. 
 Counterfactual Context: Tricia was at a costume party.
Output (English): All the sudden lightening struck. The party lost its power. She was beyond frightened.