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 story in a few sentences.

Once upon a time, in a desert far away, there was a rose who was so proud of her beautiful looks. Her only complaint was growing next to an ugly cactus.
Every day, the beautiful rose would insult and mock the cactus on his looks, all while the cactus remained quiet. All the other plants nearby tried to make the rose see sense, but she was too swayed by her own looks.
One scorching summer, the desert became dry, and there was no water left for the plants. The rose quickly began to wilt. Her beautiful petals dried up, losing their lush color.
Looking to the cactus, she saw a sparrow dip his beak into the cactus to drink some water. Though ashamed, the rose asked the cactus if she could have some water. The kind cactus readily agreed, helping them both through the tough summer, as friends.
Response: A proud rose in a desert mocks a humble cactus for his looks, despite the admonishments of nearby plants. During the hot summer, the rose begins to wilt and, embarrassed and thirsty, asks the cactus for some water. The benevolent cactus obliges and helps the rose throughout the summer.

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 water cycle.
user
The water cycle describes how water moves on, above, and below the surface of the Earth. It includes evaporation (water turns into vapor), condensation (vapor forms clouds), precipitation (water falls as rain or snow), and collection (water gathers in bodies of water like rivers and oceans). This cycle is essential for distributing water and supporting life on Earth.
assistant