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: I want a 4-sentence summary of the key points in the text provided below.

Pomegranates are round, reddish-brown fruits with a hard, smooth exterior. They grow on shrub-like trees and are typically similar in size to a navel orange. The interior of a pomegranate consists of a white, pulpy mesocarp surrounding small seeds. The seeds, also known as arils, are about the size of corn kernels and contain bright red juice. They are the only edible part of the fruit, with each pomegranate containing hundreds of seeds. The arils can be a little tricky to extract whole if the fruit is not being used simply for juice.

Pomegranates are in season during the winter months and make an attractive addition to a holiday table. They tend to be expensive when compared by weight to other fruit like apples and bananas. The fruit and the juice are used for a long list of Iranian, Indian, Turkish, Greek, and Mexican dishes. The juice also makes an effective natural dye.
Response: Pomegranates, which grow on shrub-like trees, are hard, smooth, round fruits of reddish-brown color (about the size of a navel orange). Inside a pomegranate are hundreds of red juice-filled, edible seeds (arils) and the white, inedible mesocarp. They're in season during winter and are less affordable than other typical fruits by weight. Mexican, Turkish, Greek, and other cuisines rely on pomegranates, and some people even use the juice for dye.

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 main ideas of Darwin's theory of evolution in four sentences.
user
Darwin's theory of evolution posits that species evolve over time through a process called natural selection. In this process, individuals with traits better suited for their environment are more likely to survive and reproduce, passing these advantageous traits to their offspring. Over generations, this leads to gradual changes in the species. Darwin's observations were based on extensive studies of various species, most notably during his voyage on the HMS Beagle.
assistant