This example shows a family tree with a single root node, Geetha, connected to multiple generations of descendants. The nodes are rendered as large aqua circles with thick maroon borders, and each node is labeled with the person’s name in purple text. The code uses `d3.stratify` to build a hierarchy from flat data, `d3.tree` to compute the layout, and SVG transitions to animate the drawing of links and the appearance of nodes and labels.