You are looking at the HTML representation of the RAW format.
HTML is good for debugging, but is unsuitable for application use.
Specify the format parameter to change the output format.
To see the non HTML representation of the RAW format, set format=raw.
See the complete documentation, or API help for more information.
{
    "query": {
        "namespaces": {
            "-2": {
                "id": -2,
                "case": "first-letter",
                "*": "\u30e1\u30c7\u30a3\u30a2",
                "canonical": "Media"
            },
            "-1": {
                "id": -1,
                "case": "first-letter",
                "*": "\u7279\u5225",
                "canonical": "Special"
            },
            "0": {
                "id": 0,
                "case": "first-letter",
                "*": "",
                "content": ""
            },
            "1": {
                "id": 1,
                "case": "first-letter",
                "*": "\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "Talk"
            },
            "2": {
                "id": 2,
                "case": "first-letter",
                "*": "\u5229\u7528\u8005",
                "subpages": "",
                "canonical": "User"
            },
            "3": {
                "id": 3,
                "case": "first-letter",
                "*": "\u5229\u7528\u8005\u30fb\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "User talk"
            },
            "4": {
                "id": 4,
                "case": "first-letter",
                "*": "\u5343\u5e74\u6751\u30d7\u30ed\u30b8\u30a7\u30af\u30c8",
                "subpages": "",
                "canonical": "Project"
            },
            "5": {
                "id": 5,
                "case": "first-letter",
                "*": "\u5343\u5e74\u6751\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u30fb\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "Project talk"
            },
            "6": {
                "id": 6,
                "case": "first-letter",
                "*": "\u30d5\u30a1\u30a4\u30eb",
                "canonical": "File"
            },
            "7": {
                "id": 7,
                "case": "first-letter",
                "*": "\u30d5\u30a1\u30a4\u30eb\u30fb\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "File talk"
            },
            "8": {
                "id": 8,
                "case": "first-letter",
                "*": "MediaWiki",
                "subpages": "",
                "canonical": "MediaWiki"
            },
            "9": {
                "id": 9,
                "case": "first-letter",
                "*": "MediaWiki\u30fb\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "MediaWiki talk"
            },
            "10": {
                "id": 10,
                "case": "first-letter",
                "*": "\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8",
                "canonical": "Template"
            },
            "11": {
                "id": 11,
                "case": "first-letter",
                "*": "\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u30fb\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "Template talk"
            },
            "12": {
                "id": 12,
                "case": "first-letter",
                "*": "\u30d8\u30eb\u30d7",
                "subpages": "",
                "canonical": "Help"
            },
            "13": {
                "id": 13,
                "case": "first-letter",
                "*": "\u30d8\u30eb\u30d7\u30fb\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "Help talk"
            },
            "14": {
                "id": 14,
                "case": "first-letter",
                "*": "\u30ab\u30c6\u30b4\u30ea",
                "canonical": "Category"
            },
            "15": {
                "id": 15,
                "case": "first-letter",
                "*": "\u30ab\u30c6\u30b4\u30ea\u30fb\u30c8\u30fc\u30af",
                "subpages": "",
                "canonical": "Category talk"
            },
            "100": {
                "id": 100,
                "case": "first-letter",
                "*": "Draft",
                "canonical": "Draft"
            },
            "101": {
                "id": 101,
                "case": "first-letter",
                "*": "Draft talk",
                "canonical": "Draft talk"
            },
            "102": {
                "id": 102,
                "case": "first-letter",
                "*": "Property",
                "canonical": "Property"
            },
            "103": {
                "id": 103,
                "case": "first-letter",
                "*": "Property talk",
                "subpages": "",
                "canonical": "Property talk"
            },
            "106": {
                "id": 106,
                "case": "first-letter",
                "*": "Form",
                "canonical": "Form"
            },
            "107": {
                "id": 107,
                "case": "first-letter",
                "*": "Form talk",
                "subpages": "",
                "canonical": "Form talk"
            },
            "108": {
                "id": 108,
                "case": "first-letter",
                "*": "Concept",
                "canonical": "Concept"
            },
            "109": {
                "id": 109,
                "case": "first-letter",
                "*": "Concept talk",
                "canonical": "Concept talk"
            },
            "200": {
                "id": 200,
                "case": "first-letter",
                "*": "Blog",
                "subpages": "",
                "canonical": "Blog"
            },
            "201": {
                "id": 201,
                "case": "first-letter",
                "*": "Blog talk",
                "subpages": "",
                "canonical": "Blog talk"
            },
            "420": {
                "id": 420,
                "case": "first-letter",
                "*": "Layer",
                "canonical": "Layer"
            },
            "421": {
                "id": 421,
                "case": "first-letter",
                "*": "Layer talk",
                "canonical": "Layer talk"
            },
            "_element": "ns"
        }
    }
}