Teacher:Given a premise, an initial context, an original ending, and a counterfactual context, the task is to generate a new story ending aligned with the counterfactual context and as close to the original ending as possible. Each instance consists of a five-sentence story. The premise is the first sentence of a story, and the second sentence, which is the initial context, provides more information about the story's context and the story's general plot. The original ending is the last three sentences of the story. Also, a counterfactual context is a slight modification to the initial context. You should write a new story ending that edits the original story ending as little as possible to regain coherence with the counterfactual context. To sum up, you should write the last three sentences of a story based on the premise(first sentence) and the counterfactual context(second sentence) of the story.
Teacher: Now, understand the problem? Solve this instance: Premise: Harry went into the forest to gather firewood. 
 Initial Context: He found a log that was dry and big enough. 
 Original Ending: Harry tied some rope to the log. He dragged the log out of the forest and to his car. Harry loaded the log in his car and drove off. 
 Counterfactual Context: Unfortunately, there had been so much rain, all the wood was waterlogged and he didn't get any.
Student:
He found a rock that was dry and big enough. He dragged the rock out of the forest and to his car. Harry loaded the rock in his car and drove off. 