{"version":"1.0","type":"rich","title":"ANSWER1","description":"This interactive pie chart shows the distribution of bike stations by municipality, with each slice labeled and colored. The visualization is built with D3 v6 and uses `d3.rollup` to group and count stations from a CSV file, then `d3.pie` and `d3.arc` to generate the slices. Hovering over a slice reveals a tooltip with the municipality name and station count. The chart renders as SVG with smooth opacity transitions for the tooltip, and the layout is centered using a translation on the SVG group element.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/f4cd9b61ccde43e8bd082db0164ddb0e?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}