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 concept of the firm-foundation theory in 3 sentences. 

Source Text: 
[The firm-foundation theory argues that each investment instrument, be it a common stock or a piece of real estate, has a firm anchor of something called intrinsic value, which can be determined by careful analysis of present conditions and future prospects. When market prices fall below (rise above) this firm foundation of intrinsic value, a buying (selling) opportunity arises, because this fluctuation will eventually be corrected—or so the theory goes. Investing then becomes a dull but straightforward matter of comparing something’s actual price with its firm foundation of value. 
In The Theory of Investment Value, Williams presented a formula for determining the intrinsic value of stock. Williams based his approach on dividend income. In a fiendishly clever attempt to keep things from being simple, he introduced the concept of “discounting.” Discounting basically involves looking at income backwards. Rather than seeing how much money you will have next year (say $1.05 if you put $1 in a savings certificate at 5 percent interest), you look at money expected in the future and see how much less it is worth currently (thus, next year’s $1 is worth today only about 95¢, which could be invested at 5 percent to produce approximately $1 at that time). 
Williams actually was serious about this. He went on to argue that the intrinsic value of a stock was equal to the present (or discounted) value of all its future dividends. Investors were advised to “discount” the value of moneys received later. Because so few people understood it, the term caught on and “discounting” now enjoys popular usage among investment people. It received a further boost under the aegis of Professor Irving Fisher of Yale, a distinguished economist and investor.]
Response: The firm-foundation theory argues that every investment instrument has a firm anchor of intrinsic value which can be determined by analyzing present conditions and future prospects. Buying or selling opportunities arise when the market prices fluctuate. Williams proposed that the intrinsic value was equal to the discounted value of all future dividend income and this concept was quite popular.

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.

Outline the key points of Darwin's Theory of Evolution in 3 sentences.
user
Darwin's Theory of Evolution posits that species evolve through a process called natural selection, where traits that enhance survival and reproduction become more common in successive generations. Organisms with favorable traits are more likely to survive and reproduce, passing these traits to their offspring. Over long periods, this process leads to the development of new species.
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