premise: Aaron was a shepherd with three dogs.
initial: One of his dogs was old but still energetic.
counterfactual: One of his dogs was old and died.
original_ending: One night wolves started killing his sheep. The old dog fought the wolves and chased them off. Aaron loved his old  dog.
edited_ending: One night wolves started killing his sheep.No dog fought the wolves and chased them off.Aaron missed his old dog.<SEP>One night wolves started killing his sheep.None of his other dogs fought the wolves.Aaron missed his old dog.<SEP>Aaron was devastated by this.It was his first and favorite dog.Aaron got depressed.