This example uses D3.js v5 to draw a cartoon smiling face in an SVG canvas. The code builds a yellow circle for the face, adds two eyes, and animates the eyebrows with a 2000-millisecond transition that moves them upward and back. The mouth is rendered using the `d3.arc` API to create a curved path. All elements are positioned within a centered group using coordinate translations, and the eye spacing, radius, and eyebrow dimensions are defined as constants.