This example demonstrates a dynamic "Bowl of Fruit" graphic where apples and lemons are represented as colored circles. The visualization uses D3.js and the Topologica library for reactive dataflow, updating the SVG display in response to timed events and user hovering. The code initializes five fruit circles, then removes one apple, and later replaces another apple with a lemon, while a custom color scale and radius scale map fruit types to visual attributes. It also adjusts stroke styling based on hovered index to highlight the selected fruit.