This example demonstrates special cases of the general update pattern in D3.js (v5). It shows a bowl of fruit where apples are initially added, then one is removed, another apple changes into a lemon, and finally a different apple is removed. The visualization uses SVG rendering with D3's selection, merging, and exit/remove methods to handle transitions between data states. The code uses `scaleOrdinal` for color and radius mapping based on fruit type, while data updates occur through setTimeout calls.