Summarize the following overview of different types of text summarization techniques:
Summarize the following overview of different types of text summarization techniques:
user
Text summarization techniques can be broadly categorized into two main approaches: extractive and abstractive. Extractive summarization involves identifying and extracting the most salient sentences or phrases from the original text and combining them to form a concise summary. This method preserves the original wording and structure, making it computationally efficient but potentially lacking in coherence and context. On the other hand, abstractive summarization generates entirely new sentences that capture the essential information in a more natural and coherent manner. This approach involves understanding the semantic meaning of the text and generating human-like summaries, often utilizing advanced natural language processing and generation techniques. Hybrid approaches that combine elements of both extractive and abstractive methods are also employed to leverage the strengths of each technique and produce more comprehensive and readable summaries.
assistant
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 the following excerpt and explain what it has to say about the history of pop music:

The first time the term “pop” was used to describe a piece of music that had a popular appeal was in 1926, recorded in the form of “pop song”. In fact, the 1920s is widely regarded as the time of birth of the modern music era because that’s when the recorded industry started to bloom.

During that decade, electronic recordings were first introduced, which was a huge deal for the music industry. As such, most experts agree that the 1920s was when we came to recognize pop music as we know it today, sparked by blues, hillbilly, and country music.

As I mentioned early on, pop in “pop music” stands for popular. Ever since it was first used, this term has continued to be the go-to term when describing the ever-changing music preferred by the general taste. While it’s true that the term hadn’t been officially applied until the 1950s, we can trace pop music by a few decades prior to that.
Response: Pop music first originated in the 1920s, the era of modern music where the word 'pop' was associated with particular types of music with a distinct appeal. At the same time, we saw the rise of electronic recordings, which marked this decade as the definitive year for the discovery of pop music. The word 'pop' was coined from 'popular' and it was used to describe the varying trends and tastes held by different generations and audiences. It wasn't applied till the 1950s.

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.
