This cluster dendrogram visualizes a hierarchical dataset of insurance-related entities and attributes, using a node-link diagram. The leaf nodes represent individual data fields like Claim, Policy, and their sub-attributes, arranged along the right edge, while internal nodes cluster them hierarchically. The chart uses D3.js v4, employing the `d3.cluster()` layout algorithm and `d3.stratify()` for data parsing. Each node is depicted as a circle with gray and dark internal colors, while curved links connect parent and child nodes. The data is rendered as an SVG with 960px width, showing a non-radial dendrogram where classes align at the same depth.