Task: Story Composition
Input (English): Premise: Terry took his newborn chihuahua outside to use the bathroom. 
 Initial Context: He sat down while he watched the dog play in the yard. 
 Original Ending: Suddenly, Terry saw a very large bird flying right at nis dog. Terry picked up and threw a rock at the bird right as it swooped down. The bird died on impact, and Terry's dog began to happily chew on it. 
 Counterfactual Context: He stand up while he watched the dog sleep in the yard.
Output (English): Suddenly, Terry saw a very large bird flying right at nis dog. Terry stood up and then picked up and threw a rock at the bird right as it swooped down. The bird died on impact, and Terry's dog began to happily chew on it.