A force-directed knowledge graph visualizes relationships among Star Trek characters, ranks, and ships. The node-link diagram displays triples from a small dataset, with edges labeled by the relationship type between entities. Built with D3 v5 and Immutable.js, the graph uses `d3.forceSimulation`, `forceLink`, and `forceManyBody` to simulate physical forces for layout. Nodes are draggable, and each edge includes an arrow marker indicating direction. The SVG rendering computes link orientations dynamically, and the pink circles with text labels depict entities like Picard, the Enterprise, and their connections.