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: In a few sentences, explain investing using this:

Investing
Investing involves purchasing assets, usually stocks and bonds, to earn a return on the money invested. Investing aims to increase an individual's wealth beyond the amount they invested. Investing does come with risks, as not all assets appreciate and can incur a loss.

Investing can be difficult for those unfamiliar with it—it helps to dedicate some time to gain an understanding through readings and studying. If you don't have time, you might benefit from hiring a professional to help you invest your money.
Response: Investing is the buying of assets, such as stocks and bonds, to increase money over time. It comes with risks, but taking time to understand the process or hiring a professional can make it less difficult.

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 following on the challenges and limitations of summarization systems: While summarization systems have made significant advancements, they still face several challenges and limitations. One major challenge is ensuring factual accuracy and preserving the original meaning and context of the source material, especially when dealing with complex or specialized content. Additionally, generating coherent and fluent summaries that read naturally and maintain logical flow can be difficult, particularly for abstractive summarization approaches. Another challenge is handling ambiguity, implied information, and nuances that may be present in the source text. Summarization systems can also struggle with summarizing multi-topic documents or documents with diverse writing styles. Furthermore, evaluating the quality of summaries remains a challenge, as it is often subjective and context-dependent. Finally, there are concerns related to potential biases in the training data or algorithms, as well as privacy and ethical considerations when summarizing sensitive or personal information.
user
Summarization systems face several challenges, including ensuring factual accuracy and preserving meaning and context, generating coherent and fluent summaries, handling ambiguity and nuances, summarizing multi-topic or diverse documents, evaluating summary quality objectively, and addressing potential biases and privacy concerns when dealing with sensitive information. While advancements have been made, these limitations highlight the need for continued research and improvements.
assistant