{
    "categories": [
        {
            "category_name": "Statistics",
            "subcategories": [
                {
                    "datasets": [
                        "bigcity",
                        "CanPop"
                    ],
                    "subcategory_name": "Demographics"
                },
                {
                    "datasets": [
                        "amis"
                    ],
                    "subcategory_name": "Traffic"
                }
            ]
        },
        {
            "category_name": "Nature",
            "subcategories": [
                {
                    "datasets": [
                        "beaver",
                        "catsM",
                        "dogs",
                        "ducks"
                    ],
                    "subcategory_name": "Animals"
                },
                {
                    "datasets": [
                        "darwin"
                    ],
                    "subcategory_name": "Plants"
                },
                {
                    "datasets": [
                        "manaus"
                    ],
                    "subcategory_name": "Rivers"
                }
            ]
        },
        {
            "category_name": "Medicine",
            "subcategories": [
                {
                    "datasets": [
                        "aml"
                    ],
                    "subcategory_name": "Oncology"
                },
                {
                    "datasets": [
                        "aids",
                        "CD4"
                    ],
                    "subcategory_name": "AIDS"
                },
                {
                    "datasets": [
                        "breslow"
                    ],
                    "subcategory_name": "Smoking"
                },
                {
                    "datasets": [
                        "calcium",
                        "claridge",
                        "frets"
                    ],
                    "subcategory_name": "Common"
                }
            ]
        }
    ]
}
