{"version":"1.0","type":"rich","title":"task9-1","description":"This example shows a pie chart of the Air Quality Index by country, with a color-coded legend listing each nation’s formatted index value. It loads CSV data from a GitHub raw URL, converts the Air_Index field to numbers, and sorts countries descending before rendering. The chart uses D3 v5’s `pie`, `arc`, `scaleOrdinal` with `schemeCategory10`, and `format` to construct slices and labels. The SVG output includes a centered title and a legend positioned to the right, with all text styled via CSS.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/119077cabea640f7bfb9636896bee325?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}