This example uses D3 v5 to draw a simple, static emoji-like face on a yellow circular background. The visualization renders an SVG scene directly in the browser, constructing the face from two black circles for the eyes and a semicircular mouth path. The code imports the `select` and `arc` APIs from D3 to position shapes relative to the SVG’s dimensions and to generate the mouth’s path data. No external data source is involved; the layout is computed procedurally, with explicit control over shape attributes like radius, fill, and stroke.