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: Please summarize this information into a definition of "modal verb" for me.

Modal verbs are a particular kind of auxiliary.
Look, I can do it! – Oh yes! So you can.
Can I use your phone? – Of course you can.
Do you think she will come? – I’m sure she will.
I must get our tickets today.
Modal verbs are used when you need to add special elements of meaning to a main verb, e.g.:
to express different degrees of doubt and possibility about the action of the main verb.
I may not be able to do it.
I think that I might have caught your cold.
I could ask for you, if you like.
You couldn’t do it, could you?
to express degrees of future possibility, ranging from the definite future, will, to the possible future, may, and the conditional future, could.
You will be seeing her on Friday at Jackie’s house.
I may be late home tomorrow evening.
I could bring some more bread home with me tonight.
to request or give permission for an action to take place.
May I come in?
You can borrow my car tonight if you like.
to make a prohibition, when used with a negative.
You shouldn’t use this computer without permission.
You cannot borrow my car tonight.
He must not see this letter.
to speculate.
The weather’s so bad the flight could be late.
It might be all over by the time we get there.
He may be very cross about all this.
to express obligation and duty.
I must give in my essay today.
Helen ought to tell the truth.
to refer to typical behaviour.
She can be very kind on occasions like this.
to add politeness to a request which might otherwise sound abrupt.
Would you please close the door?
to make conditional sentences.
in reported speech.
Response: A modal verb is a word that modifies the elements of the main verb in a sentence in order to express doubt, possibility, permission, prohibition, speculation, etc.

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.

Explain the concept of 'photosynthesis' in simple terms, as found in this text.
user
Photosynthesis is a process used by plants to convert sunlight into energy. They take in carbon dioxide from the air and water from the soil, and, using the sunlight, they produce oxygen and glucose, a type of sugar that plants use for food.
assistant