Task: Story Composition
Input (English): Premise: Alex introduced Tom to his dog. 
 Initial Context: Tom tried to pet the dog on his head. 
 Original Ending: The dog bit his arm. He tried to break free and ran. The dog ran after him and jumped on his back. 
 Counterfactual Context: Tom tried to wave to the dog over their video call.
Output (English): The dog was confused. He tried to lick the screen. The dog jumped up and down in excitement.