A network graph displays 49 nodes organized around five central hubs, with connecting links forming a clustered hierarchy. The visualization uses D3 v5’s `d3.forceSimulation` with charge, link, and collision forces to position nodes, which are rendered dynamically on a Canvas via `getContext('2d')`. Node colors and radii are assigned programmatically, and drag interaction is enabled through D3’s drag behavior. Data comes from a local CSV file, and the underlying simulation and rendering are orchestrated by a custom `relation` class.