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 what Griner's book will be about. 

Reference these paragraphs from an NPR article: 

In Tuesday's press statement, Knopf said that the book would be "intimate and moving" and that Griner would disclose "in vivid detail her harrowing experience of her wrongful detainment (as classified by the State Department) and the difficulty of navigating the byzantine Russian legal system in a language she did not speak."

"Griner also describes her stark and surreal time living in a foreign prison and the terrifying aspects of day-to-day life in a women's penal colony," the announcement reads. "At the heart of the book, Griner highlights the personal turmoil she experienced during the near ten-month ordeal and the resilience that carried her through to the day of her return to the United States last December."

Brittney Griner is back home in the U.S. after a prisoner swap with Russia
NATIONAL
Brittney Griner is back home in the U.S. after a prisoner swap with Russia
Griner, 32, is a 6-foot-9 two-time Olympic gold medalist, three-time All-American at Baylor University, a prominent advocate for pay equity for women athletes and the first openly gay athlete to reach an endorsement deal with Nike. She is the author of one previous book, "In My Skin: My Life On and Off the Basketball Court," published in 2014.

In February, she re-signed with the Mercury and will play in its upcoming season, which runs from May through September.
Response: Brittney Griner's book will describe her personal turmoil and overall experiences while she was detained, as well as the resilience she had during that ten months. The book will be intimate and go into vivid detail about what happened during her detainment.

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.

Summarize the economic principle of supply and demand using the following description: Supply and demand is a fundamental economic concept that describes how the availability of a product (supply) and the desire for that product (demand) influence its price. When demand exceeds supply, prices tend to rise. Conversely, when supply exceeds demand, prices tend to fall. Market equilibrium is reached when supply equals demand, resulting in a stable price.
user
Supply and demand is an economic principle where the price of a product is influenced by its availability and consumer desire. Prices rise when demand exceeds supply and fall when supply exceeds demand, with equilibrium reached when both are equal.
assistant