Summarize the following text: Summarization techniques can be broadly categorized into two types: extractive and abstractive. Extractive summarization involves selecting and concatenating the most important sentences or phrases from the original text to create the summary. This method preserves the original language and structure but may result in a less coherent summary. Abstractive summarization, on the other hand, involves generating entirely new sentences that capture the essence of the text in a more natural and readable way. This approach requires a deeper understanding of the text and the ability to paraphrase and synthesize information. Abstractive summaries are often more concise and cohesive but can also introduce errors or inaccuracies if not done carefully.
Summarize the following text: Summarization techniques can be broadly categorized into two types: extractive and abstractive. Extractive summarization involves selecting and concatenating the most important sentences or phrases from the original text to create the summary. This method preserves the original language and structure but may result in a less coherent summary. Abstractive summarization, on the other hand, involves generating entirely new sentences that capture the essence of the text in a more natural and readable way. This approach requires a deeper understanding of the text and the ability to paraphrase and synthesize information. Abstractive summaries are often more concise and cohesive but can also introduce errors or inaccuracies if not done carefully.
user
Summarization techniques are broadly divided into extractive and abstractive. Extractive summarization selects and concatenates important sentences/phrases from the original text, preserving language and structure but potentially lacking coherence. Abstractive summarization generates new sentences capturing the essence more naturally and readably, requiring deeper understanding and paraphrasing ability. Abstractive summaries are often more concise and cohesive but may introduce errors if not done carefully.
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: Tell me in a sentence or two what this text says about Nirvana.

Nirvana was an American rock band formed in Aberdeen, Washington, in 1987. Founded by lead singer and guitarist Kurt Cobain and bassist Krist Novoselic, the band went through a succession of drummers, most notably Chad Channing, and then recruited Dave Grohl in 1990. Nirvana's success popularized alternative rock, and they were often referenced as the figurehead band of Generation X. Their music maintains a popular following and continues to influence modern rock culture.
Response: Nirvana was a Washington-based rock band formed in 1987 by Kurt Cobain and Krist Novoselic, with Chad Channing and Dave Grohl being the most notable drummers. They are often cited as an influencer of modern rock culture.

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.
