This example displays a video dependency graph, showing a list of tutorial videos with titles and durations. The visualization presents each video as a node, though the links between them are initially empty. The code fetches the video data from a local `videos.json` file and uses D3.js’s `json` function to load it. It then uses D3’s `select` and `append` methods to create a `<pre>` element, inserting the raw JSON data as formatted text for display. The example demonstrates a basic data-loading and rendering workflow with D3 v5.