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: What does the article say about WFH (work-from-home) jobs in the post COVID era?

The article:
Fairer jobs
Before March 2020, WFH was a rare anomaly reserved for sick days and treacherous weather. Today, it’s a daily reality for millions. The sudden shift to remote work had enormous ripple effects, not least of which was our changed perception of what work should be: a more flexible, sustainable pursuit that we have control over, rather than the other way around. Since Covid, many employees have come to expect more from their jobs — more days off, in the form of four-day work weeks; more options for where to live; even more opportunities to make the world a better place. 

Daisy Ryan, co-owner of Bell’s in Los Alamos, California. Credit: Bonjwing Lee
It also threw the issue of equity into sharp relief, as essential workers continued to keep hospitals, trains and supermarkets running even as many others sheltered in place. The result has been a surge in calls for labor empowerment that has led to an increase in businesses that are owned by employees and fairer treatment for hospitality workers. 
Response: Work-from-home jobs weren’t wildly popular before March 2020, but now, after COVID forced many to work remotely, employees have been expecting more flexibility in their jobs and more options for where they can live. As a result, there has been an increase in the fairer treatment of workers.

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.

What are the main advantages of learning a second language?
user
Learning a second language can improve cognitive skills, enhance career opportunities, and promote cultural understanding. It also helps improve memory, problem-solving abilities, and multitasking skills.
assistant