This example animates a smiley face composed of SVG shapes, including a yellow head, eyes, ears, nose, and a mouth, with eyebrows that rise and fall. The face is centered within an SVG canvas using D3.js’s `select` and `append` methods. The code uses `d3.arc` to generate the ear, nose, and mouth paths, while the eyebrow motion is driven by chained `transition().duration()` calls. All shapes are drawn directly with D3’s DOM manipulation, relying on the SVG rendering and animation capabilities.