Task: Story Composition
Input (English): Premise: I invited 20 friends to my 17th birthday party. 
 Initial Context: The party was at my house. 
 Original Ending: Once the party started only 10 people were there. I called one friend who informed me everyone else was another party. I was extremely hurt. 
 Counterfactual Context: The party was canceled suddenly.
Output (English): We rescheduled it, and once the party started only 10 people were there. I called one friend who informed me everyone else was another party. I was extremely hurt.