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: Source text:
Elizabeth was born on 21 April 1926, the first child of Prince Albert, Duke of York (later King George VI), and his wife, Elizabeth, Duchess of York (later Queen Elizabeth The Queen Mother). Her father was the second son of King George V and Queen Mary, and her mother was the youngest daughter of Scottish aristocrat Claude Bowes-Lyon, 14th Earl of Strathmore and Kinghorne. She was delivered at 02:40 (GMT)[1] by Caesarean section at her maternal grandfather's London home, 17 Bruton Street in Mayfair.[2] The Anglican Archbishop of York, Cosmo Gordon Lang, baptised her in the private chapel of Buckingham Palace on 29 May,[3][b] and she was named Elizabeth after her mother; Alexandra after her paternal great-grandmother, who had died six months earlier; and Mary after her paternal grandmother.[5] She was called "Lilibet" by her close family,[6] based on what she called herself at first.[7] She was cherished by her grandfather George V, whom she affectionately called "Grandpa England",[8] and her regular visits during his serious illness in 1929 were credited in the popular press and by later biographers with raising his spirits and aiding his recovery.[9]

Summarization request:
Given the details about Queen Elizabeth's early life and background provided in the source text, summarize the key details about her birth and family for me in about 3 sentences.
Response: Elizabeth was born on April 21, 1926, to Prince Albert, Duke of York, and Elizabeth, Duchess of York. She was delivered by Caesarean section at her maternal grandfather's London home and baptized by the Anglican Archbishop of York, Cosmo Gordon Lang. Her name was chosen to honor her mother, her paternal great-grandmother, and her paternal grandmother.

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 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.

Text: The Great Wall of China is one of the most famous landmarks in the world, stretching over 13,000 miles across northern China. Originally built to protect Chinese states and empires from nomadic invasions, the wall's construction began as early as the 7th century BC, with most of the current structure dating from the Ming Dynasty (1368–1644). The Wall is made up of various materials, including earth, wood, bricks, and stone, adapting to the geographical conditions of each region it traverses. In addition to its military function, the Wall also facilitated trade and controlled immigration and emigration. Today, the Great Wall is a UNESCO World Heritage Site and attracts millions of tourists each year, symbolizing China's historical strength and architectural ingenuity.
user
The Great Wall of China, spanning over 13,000 miles, was constructed starting in the 7th century BC primarily to protect against invasions, with most of the current structure dating from the Ming Dynasty. Comprising various materials, it also served trade and immigration control purposes. Now a UNESCO World Heritage Site, it is a major tourist attraction symbolizing China's rich history and architectural skill.
assistant