{"Using Duolingo":{"questions":[{"question":"Why did my course change?","answer":"Course changes can occur due to updates, improvements, or adjustments to the Duolingo curriculum."},{"question":"What is a streak?","answer":"A streak in Duolingo represents the consecutive days a user has practiced on the platform without a break."},{"question":"What are leaderboards and leagues?","answer":"Leaderboards and leagues in Duolingo foster friendly competition by ranking users based on their language learning progress and daily achievements."},{"question":"Does Duolingo use any open source libraries?","answer":"Yes, Duolingo utilizes various open source libraries as part of its technology stack to enhance the learning experience."}]},"NOT Using Duolingo":{"questions":[{"question":"Why did my course change?","answer":"Course changes can occur due to updates, improvements, or adjustments to the Duolingo curriculum."},{"question":"What is a streak?","answer":"A streak in Duolingo represents the consecutive days a user has practiced on the platform without a break."},{"question":"What are leaderboards and leagues?","answer":"Leaderboards and leagues in Duolingo foster friendly competition by ranking users based on their language learning progress and daily achievements."},{"question":"Does Duolingo use any open source libraries?","answer":"Yes, Duolingo utilizes various open source libraries as part of its technology stack to enhance the learning experience."}]}}