This pie chart visualizes the distribution of wine quality ratings from the WineQT dataset. The chart renders as a circular SVG, with each slice labeled directly with its quality score and a legend beneath displaying the count of wines per rating. It uses d3.csv to load the remote dataset, d3.rollup to count occurrences by quality, and d3.pie with d3.arc to generate the slices, colored via d3.scaleOrdinal with d3.schemeSet3.