This example displays a dependency graph of video tutorials from a data visualization course, showing each video as a node with its title and duration. The initial state renders the raw JSON data as text in a `<pre>` element, demonstrating the dataset structure with empty links. The code uses D3 v5’s `json()` method to asynchronously load `videos.json` and then appends a formatted string via `JSON.stringify`. No visualization is drawn yet, as the implementation focuses on data loading and inspection.