You are looking at the HTML representation of the JSON format.
HTML is good for debugging, but probably is not suitable for your application.
See complete documentation, or API help for more information.
{
	"query": {
		"namespaces": {
			"-2": {
				"id": -2,
				"*": "\u041c\u0435\u0434\u0438\u0430",
				"canonical": "Media"
			},
			"-1": {
				"id": -1,
				"*": "\u0421\u043b\u0443\u0436\u0435\u0431\u043d\u0430\u044f",
				"canonical": "Special"
			},
			"0": {
				"id": 0,
				"*": ""
			},
			"1": {
				"id": 1,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435",
				"subpages": "",
				"canonical": "Talk"
			},
			"2": {
				"id": 2,
				"*": "\u0423\u0447\u0430\u0441\u0442\u043d\u0438\u043a",
				"subpages": "",
				"canonical": "User"
			},
			"3": {
				"id": 3,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0443\u0447\u0430\u0441\u0442\u043d\u0438\u043a\u0430",
				"subpages": "",
				"canonical": "User talk"
			},
			"4": {
				"id": 4,
				"*": "wiki.web.ru",
				"canonical": "Project"
			},
			"5": {
				"id": 5,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 wiki.web.ru",
				"subpages": "",
				"canonical": "Project talk"
			},
			"6": {
				"id": 6,
				"*": "\u0424\u0430\u0439\u043b",
				"canonical": "File"
			},
			"7": {
				"id": 7,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0444\u0430\u0439\u043b\u0430",
				"subpages": "",
				"canonical": "File talk"
			},
			"8": {
				"id": 8,
				"*": "MediaWiki",
				"canonical": "MediaWiki"
			},
			"9": {
				"id": 9,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 MediaWiki",
				"subpages": "",
				"canonical": "MediaWiki talk"
			},
			"10": {
				"id": 10,
				"*": "\u0428\u0430\u0431\u043b\u043e\u043d",
				"canonical": "Template"
			},
			"11": {
				"id": 11,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0448\u0430\u0431\u043b\u043e\u043d\u0430",
				"subpages": "",
				"canonical": "Template talk"
			},
			"12": {
				"id": 12,
				"*": "\u0421\u043f\u0440\u0430\u0432\u043a\u0430",
				"canonical": "Help"
			},
			"13": {
				"id": 13,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u0441\u043f\u0440\u0430\u0432\u043a\u0438",
				"subpages": "",
				"canonical": "Help talk"
			},
			"14": {
				"id": 14,
				"*": "\u041a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u044f",
				"canonical": "Category"
			},
			"15": {
				"id": 15,
				"*": "\u041e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u043a\u0430\u0442\u0435\u0433\u043e\u0440\u0438\u0438",
				"subpages": "",
				"canonical": "Category talk"
			},
			"100": {
				"id": 100,
				"*": "Citation",
				"canonical": "Citation"
			},
			"101": {
				"id": 101,
				"*": "Citation Discussion",
				"canonical": "Citation Discussion"
			}
		}
	}
}