This example combines a social network graph and a family tree side by side, using the same set of thirteen individuals to show both their interpersonal connections and their genealogical relationships. The network graph uses `d3.forceSimulation` with link, charge, and center forces to position nodes dynamically, while the family tree employs `d3.stratify` and `d3.tree` to render parent-child links hierarchically. Both visualizations render as SVG elements, with circle nodes and labeled text for each person.