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: In two or three sentences, summarize abstract art's characteristics in a way third-fifth graders understand. 

There are a few characteristics that are commonly associated with abstract art:

Non-representational: Abstract art does not depict specific objects or scenes, but rather uses form, color, and line to create an overall composition.

Emotional or expressive: Abstract art is often intended to convey emotion or express an idea or concept.

Focused on form and composition: The form and composition of the artwork are often more important than the specific objects or scenes depicted.

Non-literal: Abstract art does not depict objects or scenes in a literal way, but rather uses symbolic or metaphorical elements to convey meaning.

Intuitive or spontaneous: Abstract art is often created in an intuitive or spontaneous way, rather than following a preconceived plan or set of rules.

Non-traditional: Abstract art often breaks with traditional representational techniques and conventions, and may include unconventional materials or techniques.
Response: Abstract art uses forms, colors, and lines to symbolize emotions, ideas, and meanings. It isn't usually created with a plan or set of rules in mind because the form is more important than the objects and scenes. 

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.

Describe in simple terms how airplanes stay in the air.
user
Airplanes stay in the air because of lift, which is created when air moves over and under the wings. The engines give it speed, and the wings shape the air flow to keep it up.
assistant