This example builds a yellow smiley face with SVG shapes, including circular eyes, rectangular eyebrows, and an arc-based mouth. Using D3.js v5, it demonstrates DOM manipulation by selecting the root `svg` element, appending a centered group, and positioning each facial feature with translation transforms. The eyebrows move through a chained `transition().duration()` sequence, animating their vertical position over four seconds before stopping. The face itself is static afterward, with no interactive or data-driven behavior beyond the initial scripted animation.