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:
At its simplest, forex trading is similar to the currency exchange you may do while traveling abroad: A trader buys one currency and sells another, and the exchange rate constantly fluctuates based on supply and demand.

Currencies are traded in the foreign exchange market, a global marketplace that’s open 24 hours a day Monday through Friday. All forex trading is conducted over the counter (OTC), meaning there’s no physical exchange (as there is for stocks) and a global network of banks and other financial institutions oversee the market (instead of a central exchange, like the New York Stock Exchange).

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A vast majority of trade activity in the forex market occurs between institutional traders, such as people who work for banks, fund managers and multinational corporations. These traders don’t necessarily intend to take physical possession of the currencies themselves; they may simply be speculating about or hedging against future exchange rate fluctuations.

A forex trader might buy U.S. dollars (and sell euros), for example, if she believes the dollar will strengthen in value and therefore be able to buy more euros in the future. Meanwhile, an American company with European operations could use the forex market as a hedge in the event the euro weakens, meaning the value of their income earned there falls.

Summarization request:
Briefly summarize how forex trading works and who the major players are.
Response: Forex trading involves exchanging one currency for another. The value of currencies fluctuates constantly based on supply and demand as well as economic factors. Most forex trading is done between large institutions like banks, fund managers, and multinational companies. These major players speculate on the strength of currencies or hedge against changes. They don’t usually take physical possession of the currencies.

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.

Source text:
Text summarization is the process of creating a concise and precise summary of a longer piece of text while focusing on the major points covered and removing unnecessary details. It is a crucial skill in various fields, including academia, journalism, and business, as it allows for efficient communication and understanding of complex information.

There are two main approaches to text summarization: extractive and abstractive.

Extractive summarization involves selecting and concatenating the most important sentences or phrases from the original text to form the summary. This approach preserves the original wording and structure but may result in a less coherent summary due to the lack of rephrasing.

Abstractive summarization, on the other hand, generates entirely new sentences that capture the essence of the original text. This approach involves understanding the text's meaning and generating a summary using different words and structures. It typically results in more coherent and readable summaries but requires advanced natural language processing techniques.

Summarization can be performed manually by humans or automated using machine learning algorithms and natural language processing (NLP) techniques. Manual summarization relies on human cognitive abilities to comprehend the text, identify the main ideas, and synthesize a concise summary. Automated summarization systems analyze the text using various NLP techniques, such as topic modeling, sentence scoring, and language generation models, to produce summaries automatically.

Effective summarization requires critical reading, comprehension, and synthesis skills, as well as the ability to distinguish between main ideas and supporting details. It is a valuable skill in various contexts, such as preparing study materials, generating abstracts for research papers, or creating previews for articles or reports.

Summarization request:
Discuss the two main approaches to text summarization (extractive and abstractive) and their respective advantages and limitations.
user
The two main approaches to text summarization are extractive and abstractive. Extractive summarization involves selecting and combining the most important sentences or phrases from the original text to form the summary. This approach preserves the original wording and structure but may result in less coherent summaries due to the lack of rephrasing. On the other hand, abstractive summarization generates entirely new sentences that capture the essence of the original text, leading to more coherent and readable summaries. However, it requires advanced natural language processing techniques. While extractive summarization is simpler to implement, abstractive summarization can provide more natural and concise summaries but is more computationally complex.
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