This example shows a partially completed smiley face rendered as a static SVG. A yellow circle forms the head, with two black eyes positioned symmetrically, and a thin red ellipse hinting at a nose. The code uses React to define the SVG structure and D3’s `arc` generator to create a mouth path, though the arc is not yet visible in the final output. The face is centered using a translation group, and dimensions like eye offset and radius are stored as constants.