This example animates a set of circles as they move and resize across a wide SVG canvas. Five circles, each driven by values from a static JavaScript array, shift their horizontal, vertical, and radius properties over a four-second duration. The code uses D3's `select()` to append the SVG and builds the animation with the `transition()` API, chaining `.duration()`, `.attr()`, and opacity settings. The circles are rendered as semi-transparent blue shapes, with the initial data divided by a constant factor within the external data module.