{"type":"rich","version":"1.0","title":"chapter 20","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/XKpTBKMx8zQn-f1Q/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/5caa5304a331f33427f9fd50\" frameborder=\"0\" allowfullscreen></iframe>"}