Convert the attached/provided feature list into a JSON array of module objects. Ensure it perfectly matches this structure exactly, returning ONLY valid JSON with no markdown formatting:

[
  {
    "name": "Module 1",
    "description": "Brief description 1.",
    "tag": "Core",
    "features": [
      {
        "name": "Feature 1",
        "description": "Desc",
        "tag": "Core"
      }
    ]
  },
  {
    "name": "Module 2",
    "description": "Brief description 2.",
    "tag": "Advanced",
    "features": [
      {
        "name": "Feature 2",
        "description": "Desc",
        "tag": "Optional"
      }
    ]
  }
]