This example demonstrates the simplest possible use of Scalable Vector Graphics (SVG) to render a single circle element with inline `cx`, `cy`, and `r` attributes. The circle is positioned at coordinates (50, 50) with a radius of 50. The code contains a minimal HTML page with an inline `<svg>` tag, showing how to create vector graphics directly in markup without any JavaScript or additional libraries. The rendering relies entirely on the browser's native SVG support, forming a foundational starting point for more complex data visualizations built from primitive shapes.