Task: Story Composition
Input (English): Premise: Steve had some friends over. 
 Initial Context: At one point he went to the bathroom. 
 Original Ending: It was a huge mess. He asked everyone who did it. Nobody admitted to it and he never found out. 
 Counterfactual Context: At one point they went swimming.
Output (English): It was a huge success. He asked everyone to join in. Nobody wanted to stop and he never got out.