Task: Story Composition
Input (English): Premise: The rain cause the boy to run inside from playing in the yard. 
 Initial Context: He took with him his ball. 
 Original Ending: The boy continued to play with the ball inside. He bounced it off a wall and tried to catch it. He missed badly and the ball took out a lamp. 
 Counterfactual Context: He took with him his frisbee.
Output (English): The boy continued to play with the frisbee inside. He bounced it off a wall and tried to catch it. He missed badly and the frisbee took out a lamp.