{"type":"rich","version":"1.0","title":"Chapter 4: Variability","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/ah4Hk61oR25GTOrg/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/6a1e0793ad68476e464ceae0\" frameborder=\"0\" allowfullscreen></iframe>"}