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.

Text:
Abstractive summarization is a method of summarizing a text that involves generating new sentences or phrases to capture the essence of the original text. Unlike extractive summarization, which simply extracts and combines the most important sentences from the source material, abstractive summarization requires understanding the meaning and context of the text and then expressing the main ideas in new, concise language.

This approach is more challenging than extractive summarization because it requires the ability to comprehend the text at a deeper level and synthesize the information into a coherent and fluent summary. Abstractive summarization often involves analyzing the semantic relationships, identifying the key concepts and their relationships, and generating new sentences that accurately represent the main points.

Abstractive summarization techniques typically rely on advanced natural language processing (NLP) techniques, such as semantic analysis, discourse analysis, and language generation models. These techniques enable the system to understand the context and meaning of the text, identify the most salient information, and generate concise and coherent summaries.

One of the advantages of abstractive summarization is that it can produce more concise and readable summaries compared to extractive methods, as the generated sentences are tailored specifically for the summary. However, this approach is more computationally intensive and can be prone to errors or inaccuracies if the system fails to fully understand the nuances of the original text.

Abstractive summarization is particularly useful in scenarios where a high degree of condensation is required or where the original text is complex or contains redundant information. It is an active area of research in the field of natural language processing and has applications in various domains, including news summarization, academic literature summarization, and summarizing long reports or documents.

Summarization request:
Explain the concept of abstractive summarization and its key characteristics.
user
Abstractive summarization is a method of summarizing a text that involves generating new sentences or phrases to capture the essence of the original text. It requires understanding the meaning and context of the text and synthesizing the information into a coherent and concise summary using new language. This approach relies on advanced natural language processing techniques, such as semantic analysis, discourse analysis, and language generation models. Abstractive summarization can produce more concise and readable summaries tailored specifically for the summary but is computationally intensive and prone to errors if the system fails to fully understand the nuances of the original text. It is particularly useful for highly condensed summaries or summarizing complex texts with redundant information.
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