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: Give me a one-sentence overview of what this article opening is saying:

It’s the interview question most people dread: “Tell me about yourself.” Or maybe you're out with friends, and someone asks, "So, what do you do?” If you are one of those people braving the current job market, securing a new position is challenging but not impossible. One of the things that will set you apart from the competition is interview preparation. And although most of us aren’t actually meeting in elevators these days, the elevator pitch is still the best way to present yourself to potential employers in a compelling way.

An elevator pitch is basically a concise introduction that can be communicated in 30 (or in some cases 60) seconds or less. Because everyone these days is short on time, it’s a useful tool whether you are interviewing or simply networking. The best pitches are the ones that are prepared and perfected in advance with memorable anecdotes. Here are some ways to craft an elevator pitch that will help you stand out from the crowd and land the job of your dreams.
Response: You should be prepared for interviews by having an elevator pitch, which is a useful tool and a concise introduction. 

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 point of this passage: Renewable energy sources such as solar, wind, and hydropower are essential in combating climate change. Unlike fossil fuels, these energy forms do not emit greenhouse gases during use. This makes them a cleaner alternative that can help reduce the environmental impacts of energy production.
user
Renewable energy sources are crucial for reducing greenhouse gases and combating climate change.
assistant