A cheerful, hand-drawn-style face rendered as a yellow circle with black outlines, two eyes, and a curved smile, all built with D3 v5. The eyebrows blink repeatedly via chained `transition().duration()` calls that move them up and down every two seconds. The smile is drawn using the `d3.arc` path generator with specified inner and outer radii and angles. This static SVG animation demonstrates basic shape composition and timed attribute transitions in D3.