This example visualizes a movie database as a network graph, showing connections between movies and the people associated with them. The code uses `d3.forceSimulation` to position nodes, with `node.Person` and `node.Movie` styled distinctly by color and caption. Relationships are rendered as labeled links, and the graph displays node IDs or custom fields like `name` and `title` as captions. The styling is defined in a `movies.grass` file, which specifies colors, borders, and text formatting for all element types.