This example shows a smiley face constructed from geometric shapes, with a yellow circular head, two black eyes, and a straight mouth line on an SVG canvas. The visualization uses React 18.2 and D3.js conventions through hardcoded SVG elements, including the `circle`, `line`, and `g` tags, all rendered directly in the DOM via a pre-bundled script. The face demonstrates basic SVG coordinate positioning (using `cx`, `cy`, `x`, and `y` attributes) and styling through fill and stroke properties, with the entire figure centered at (400, 250) on a 960×500 canvas.