{"question":"What is supervised learning?","answer":"Training a model using labeled data.","difficulty":"beginner"}
{"question":"What is unsupervised learning?","answer":"Learning patterns from unlabeled data.","difficulty":"beginner"}
{"question":"What is reinforcement learning?","answer":"Learning through rewards and penalties.","difficulty":"intermediate"}
{"question":"What is precision?","answer":"Ratio of correct positive predictions.","difficulty":"intermediate"}
{"question":"What is recall?","answer":"Ratio of actual positives correctly identified.","difficulty":"intermediate"}
