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.

Premise: It's been too hot for my dog to want to play outside. 
 Initial Context: He gets so hyper inside so we have to come up with games to play. 
 Original Ending: I gave him a treat yesterday and he tossed it back to me. I picked it up, and he opened his mouth slightly. I tossed it into his mouth and he threw it back, happy. 
 Counterfactual Context: He is overweight and really needs to walk.
I gave him a ball yesterday and he tossed it back to me. I picked it up and he opened his mouth slightly. I tossed it into his mouth and he threw it back, happy. 

Premise: I went to the fridge to get a bottle of water. 
 Initial Context: Over the next hour I completely drank the contents of the bottle. 
 Original Ending: I was going to throw the bottle into the trash. I instead decided to twist the bottle until the lid launched off. The lid shut off and left a bruise on my leg. 
 Counterfactual Context: Over the next hour I completely forgot to drink the contents of the bottle.
I was going to throw the bottle into the trash. I instead decided to twist the bottle until the lid launched off. The lid popped off and water poured out everywhere. 

Premise: Wendy put a hamburger on the barbecue. 
 Initial Context: She went inside while the hamburger cooked. 
 Original Ending: She came back outside to check on the hamburger. The hamburger was gone! Down the street there was a dog eating a hamburger. 
 Counterfactual Context: She sat down in front of the barbecue while the hamburger cooked.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
She looked up from her book to check on the hamburger. The hamburger was gone! Down the street there was a dog eating a hamburger. 

