This example shows a smiling face constructed from a yellow circle, two black eyes, and a curved mouth, all rendered as SVG within a React component. The face is built from separate React components for the background, eyes, and mouth, which are composed inside a central `FaceContainer` that translates the drawing to the center of a 960×500 canvas. The mouth is drawn using the `d3.arc` API to generate an arc path with defined inner and outer radii and angled endpoints, while the other shapes are simple SVG circles.