{"version":"1.0","type":"rich","title":"question2","description":"A stacked bar chart shows vehicle sales across five brands, with each bar divided into three color-coded car categories: SUV, sedan, and mini. The chart uses D3 v7's `d3.stack()` and `d3.scaleBand()` to position horizontal bars, with `d3.scaleLinear()` mapping the sales totals. Hovering over a segment triggers a tooltip displaying the exact sales value for that brand and category, using D3 event handlers for mouseover, mousemove, and mouseout interactions.","provider_name":"VizHub AI Studio","provider_url":"https://vizhub.com","html":"<iframe src=\"https://vizhub.com/viz/03308b7ad359448099df0ea5f628b42c?mode=embed\" width=\"960\" height=\"500\" scrolling=\"no\" frameborder=\"0\"></iframe>","width":960,"height":500,"cache_age":3600}