Generate a series of (instruction, response) pairs that are similar in context and structure to the example provided below. Each pair should consist of a concise instruction followed by an appropriate, detailed response. The instruction should pose a clear task or question, while the response should provide a comprehensive answer or solution that could be understood by someone with a basic understanding of the subject.

Example pair: 
Instruction: Summarize this text for an 8th-grade audience. 

When a great white shark is born, along with up to a dozen siblings, it immediately swims away from its mother. Born on the east and west coasts of North America, the south of Africa and southwest Australia, baby sharks are on their own right from the start. Their mother may see them only as prey.

At birth a baby great white shark is already about 5 feet (1.5 meters) long; as it grows it may reach a length up to four times that. The pup (which is what a baby shark is called) will live its life at the top of the ocean's food chain. But before it grows larger, the pup must avoid predators bigger than it is—including other great white sharks. Many baby sharks do not survive their first year. Young great white sharks eat fish (including other sharks) and rays. As they grow, the sharks’ favorite prey becomes sea mammals, especially sea lions and seals.
Response: Great white sharks are born with up to 12 siblings before swimming away from their mothers so they don't get eaten. They are born on the coasts of Africa, Australia, and North America. They're roughly five feet long as pups. As they grow up and quadruple in size, other great white sharks may eat them, while they themselves eat fish, sharks, rays, and eventually sea mammals.

Your task is to generate more pairs that maintain this level of clarity and detail. The topic is Summarization. Write a long text of instruction by yourself, then summarize the given instruction in a response. Ensure that the responses are informative and accurate, suitable for an educational context. 

Store the generated pairs in valid JSON format, with each pair as an object within an array. Each object should have two key-value pairs: "instruction" and "response". For instance: 

{"contents": [{"instruction": "text", "response": "text"}, {"instruction": "text", "response": "text"}, ...]} 

Remember to maintain consistency in the format and ensure the generated pairs are diverse and cover a broad range of subjects. You must return the response in the asked format and you must not add any additional text in your response.

Describe how the human digestive system works for young learners.
user
The human digestive system is how our bodies turn food into energy. First, food enters the mouth, where it is chewed and mixed with saliva. Then, it goes down the esophagus to the stomach, where it gets broken down by stomach acids. Next, it moves to the small intestine, where nutrients are absorbed into the body. What is left goes to the large intestine, where water is absorbed, and then out of the body as waste.
assistant