Task: Story Composition
Input (English): Premise: Frank left work on a Friday afternoon. 
 Initial Context: On his way to class, he saw a dog limping toward him. 
 Original Ending: As the dog passed, he noticed that it's leg appeared to be broken. He took it to the vet and the vet put it's leg in a cast. Since the dog looked like a stray, Frank decided to keep it. 
 Counterfactual Context: He picked up a stray dog and spent the rest of the night trying to find the dog's owner.
Output (English): As he picked up the dog he noticed that it's leg appeared to be broken. He took it to the vet and the vet put it's leg in a cast. Since the dog looked like a stray, Frank decided to keep it.