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 plot of this play in less than ten words.

Two men, Vladimir and Estragon, meet near a tree. They converse on various topics and reveal that they are waiting there for a man named Godot. While they wait, two other men enter. Pozzo is on his way to the market to sell his slave, Lucky. He pauses for a while to converse with Vladimir and Estragon. Lucky entertains them by dancing and thinking, and Pozzo and Lucky leave.

After Pozzo and Lucky leave, a boy enters and tells Vladimir that he is a messenger from Godot. He tells Vladimir that Godot will not be coming tonight, but that he will surely come tomorrow. Vladimir asks him some questions about Godot and the boy departs. After his departure, Vladimir and Estragon decide to leave, but they do not move as the curtain falls.

The next night, Vladimir and Estragon again meet near the tree to wait for Godot. Lucky and Pozzo enter again, but this time Pozzo is blind and Lucky is dumb. Pozzo does not remember meeting the two men the night before. They leave and Vladimir and Estragon continue to wait.

Shortly after, the boy enters and once again tells Vladimir that Godot will not be coming. He insists that he did not speak to Vladimir yesterday. After he leaves, Estragon and Vladimir decide to leave, but again they do not move as the curtain falls, ending the play.
Response: Two men wait for Godot who never arrives.

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.

Briefly describe the main stages of the water cycle in less than twenty words.
user
Evaporation, condensation, precipitation, and collection are the main stages of the water cycle.
assistant