{
    "version": 1.0,
    "title": "[1\ud559\ub144] Lesson 4 words (~p.87)",
    "type": "rich",
    "html": "<iframe width=\"500\" height=\"500\" style=\"border:3px solid black; margin:auto; display:block\" frameborder=\"0\" src=\"https://crosswordlabs.com/embed/1-lesson-4-words-p87\"></iframe>",
    "width": 500,
    "height": 500,
    "thumbnail_url": "https://crosswordlabs.com/image/16766296.svg",
    "thumbnail_width": 100,
    "thumbnail_height": 100
}