This example shows a simple SVG face constructed from three circles: a large grey head with a black stroke and two smaller eyes. The React component defines the visualization declaratively, using JSX to render the SVG elements. D3 v7 is loaded via a CDN along with React 17, though D3 is not actively used in the drawing logic. The layout is fixed through constants like `centerX`, `centerY`, and `eyeOffsetX`, demonstrating basic coordinate positioning and styling within an inline React render.