This example shows a yellow smiley face built from SVG shapes, with a circular background, two eyes, and an arc-shaped mouth. The face is assembled from React components that pass geometry values like radii, offsets, and stroke widths down through props. The code uses d3.arc to compute the mouth path, while d3.forceSimulation is present in the data file, though the primary rendering relies on React's declarative SVG output. The components are composed within a FaceContainer that centers the graphic on an SVG canvas.