This example presents a force-directed network graph of seven nodes representing a dean, two teachers, and four students, with weighted links showing relationships. The visualization uses D3 v4 and the older d3.layout.force API to position nodes within an SVG canvas. Node positions update dynamically via the force.on("tick") callback, while node dragging is enabled through force.drag. The graph reads its structure from a JSON file, rendering each node as a tomato-colored circle with a name label and links as stroked lines whose thickness corresponds to the link's weight attribute.