{
    "version": 1.0,
    "title": "Rise and Spread of Christianity",
    "type": "rich",
    "html": "<iframe width=\"500\" height=\"500\" style=\"border:3px solid black; margin:auto; display:block\" frameborder=\"0\" src=\"https://crosswordlabs.com/embed/rise-and-spread-of-christianity-2\"></iframe>",
    "width": 500,
    "height": 500,
    "thumbnail_url": "https://crosswordlabs.com/image/7321544.svg",
    "thumbnail_width": 100,
    "thumbnail_height": 100
}