{"height":500,"html":"<iframe src=\"https://www.tablepage.ai/d/metro-rail-systems-worldwide-1863-2024?embed=1\" width=\"800\" height=\"500\" frameborder=\"0\"></iframe>","provider_name":"tablepage.ai","provider_url":"https://tablepage.ai","title":"Metro Rail Systems Worldwide: What Opened When?","type":"rich","version":"1.0","width":800}