This network graph visualizes relationships between eleven named individuals, grouped into clusters, with a force-directed layout. Nodes are rendered as grey circles with black outlines, linked by red lines whose thickness corresponds to the numeric weight of each connection. The graph is built using D3 v2’s `d3.layout.force` for physics-driven positioning and drag interaction, reading graph structure from a local `graphFile.json`. Node labels are added via SVG `<text>` elements, and link widths are mapped with `Math.sqrt(d.weight)` for visual scaling.