This visualization shows a small social network with nine named individuals organized into five groups, connected by eight weighted links. The graph uses a force-directed layout, where node positions are computed by `d3.layout.force` with gravity, charge, and distance settings, rendering nodes as blue circles and black links with stroke widths scaled to link weight. Draggable node groups display names in red text, and the simulation runs until tick events update link coordinates and node transforms. Data comes from a local `graph.json` file.