{"version":"1.0","type":"rich","title":"Answer1","description":"This pie chart shows the distribution of bike-share stations across municipalities, with slice labels and a color-coded legend. Built with D3 v6, it loads CSV data from a GitHub-hosted hubway_stations file, uses `d3.rollups` to count stations per municipality, and applies `d3.pie()` and `d3.arc()` to generate the SVG paths. A `d3.scaleOrdinal` with `d3.schemeCategory10` encodes categories, while labels are positioned using `arc.centroid()`. The legend is appended separately, and all shapes render as SVG elements in a fixed-width layout.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/2d2368c518c84e0e94140f9216278b9f?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}