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This example shows a simple smiley face rendered as an SVG graphic. It uses React to define the component structure and D3’s `arc` generator to create the mouth path. The face consists of a yellow circle with a black stroke, two black eye circles, and a filled arc for the mouth, all positioned relative to the center of a 960×500 viewport. The visualization demonstrates basic geometric shapes and D3 arc generation within a React-based SVG rendering approach.