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: Tell me what this article says about energy in a few sentences. 

Societies use energy for transportation, manufacturing, illumination, heating and air conditioning, and communication, for industrial, commercial, and domestic purposes. Energy resources may be classified as primary resources, where the resource can be used in substantially its original form, or as secondary resources, where the energy source must be converted into a more conveniently usable form. Non-renewable resources are significantly depleted by human use, whereas renewable resources are produced by ongoing processes that can sustain indefinite human exploitation.

Thousands of people are employed in the energy industry. The conventional industry comprises the petroleum industry, the natural gas industry, the electrical power industry, and the nuclear industry. New energy industries include the renewable energy industry, comprising alternative and sustainable manufacture, distribution, and sale of alternative fuels.
Response: Energy resources, which are primary and secondary resources, are used for heating, manufacturing, transport, and other societal purposes. They're used substantially in their original form and used in converted forms, with non-renewable resources being more depleted by humans than renewable resources are. The energy industry employs thousands of people, such as petroleum, natural gas, electrical power, nuclear energy, and renewable energy workers.

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.

Give me a brief summary on DNA structure based on this description.
user
DNA, or deoxyribonucleic acid, has a double-helix structure composed of two strands that coil around each other. Each strand consists of a sugar-phosphate backbone attached to nitrogenous bases: adenine, thymine, cytosine, and guanine. Adenine pairs with thymine, and cytosine pairs with guanine. This structure is crucial for DNA's role in storing genetic information and guiding protein synthesis.
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