{"version":"1.0","type":"rich","title":"Visualization lesson","description":"A simple animated face demonstrates basic D3.js shapes and transitions. Four circles and several arc paths create eyes, eyebrows, and a smile over a dark green background. The left eye, smile, and both eyebrows move vertically using chained `transition().duration()` calls, while the right eye remains static. The code uses d3.arc() to generate path data and SVG element selection with d3.select(). No external data source is used; all shapes are manually positioned within a 960x500 SVG canvas.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/32fc6bfe4a6e4ff08f2d21e570f8a58a?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}