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: Could you summarize some facts about Stuttgart from this article?

Stuttgart is the biggest city (and capital) of the German state Baden-Württemburg. 
It’s perhaps best known as the ‘cradle of the automobile industry’, which explains why it’s home to not just one, but two car-centric museums: one belonging to Mercedes-Benz, and one to Porsche.
Besides cars though, the area around Stuttgart offers up some of the cutest small towns you can find in Germany, all easily reachable by public transport, meaning you get the best of all worlds during a visit here.
Response: Stuttgart is the capital of Baden-Württemburg and allows easy access to some of the smaller towns in Germany via public transport. The city is also home to two car museums, one belonging to Mercedes-Benz and the other to Porsche.

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.

Could you provide a summary of the key features and history of the Eiffel Tower based on this passage?

The Eiffel Tower, one of the most recognizable structures in the world, was constructed as the entrance arch to the 1889 World's Fair held in Paris to celebrate the 100th anniversary of the French Revolution. Designed by the engineer Gustave Eiffel, the tower stands at 324 meters and was the tallest man-made structure in the world until the completion of New York's Chrysler Building in 1930. It's a wrought-iron lattice tower and remains a global cultural icon of France, attracting millions of visitors annually.
user
The Eiffel Tower, designed by Gustave Eiffel, was built for the 1889 World's Fair in Paris to celebrate the French Revolution's 100th anniversary. Standing at 324 meters, it was the tallest structure until 1930 and remains a major tourist attraction.
assistant