A friendly yellow face (rendered with SVG) blinks and raises its eyebrows: its eyes and brows animate through a pair of D3 transitions, while its mouth is drawn using the `d3.arc` shape generator. Created with React and D3 v5, the example uses a simple `transition` chain to shrink and restore the eye circles and shift the eyebrow rectangles. The underlying data is static, with all geometry defined by hardcoded dimensions and positions within a single centered SVG group.