This example shows an interactive SVG face built with React and D3. It renders a yellow circular head with eyes and a mouth, using a `Face` component composed of smaller components for each facial feature. The visualization also tracks mouse movement, drawing a small red circle at the cursor position. The code uses D3’s `arc` API to create the mouth path and React’s `useState` to manage the mouse position. Rendering is handled through the ReactDOM library with inline SVG elements.