This example shows a stylized smiley face built from SVG shapes: a yellow circle with a black stroke, two small eyes, and a curved mouth. It uses React to define the visualization components and D3’s `arc` generator to create the mouth path. The code sets fixed positions, radii, and angles for each part, then renders them into an SVG canvas via ReactDOM. The face is centered on a 960×500 viewport, with all geometry computed from constant values.