This example shows a small directed graph of four nodes representing people and databases, with labeled edges indicating relationships such as “KNOWS” and “FOUNDED.” The visualization uses d3.forceSimulation to position nodes, and SVG lines with arrowhead markers for links. Node labels display names and types, while edge labels are placed along paths using textPath. The graph is draggable, with the simulation restarting on interaction, and node colors are assigned via d3.scaleOrdinal with d3.schemeCategory10. Data is loaded from an inline JSON object.