{
    "version": 1.0,
    "title": "Unit 2 : \u97f3\u697d\u4f1a\uff08\u304a\u3093\u304c\u304f\u304b\u3044\uff09",
    "type": "rich",
    "html": "<iframe width=\"500\" height=\"500\" style=\"border:3px solid black; margin:auto; display:block\" frameborder=\"0\" src=\"https://crosswordlabs.com/embed/unit-2-4173\"></iframe>",
    "width": 500,
    "height": 500,
    "thumbnail_url": "https://crosswordlabs.com/image/3658182.svg",
    "thumbnail_width": 100,
    "thumbnail_height": 100
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