This example displays a cartoon face constructed from SVG shapes, including a yellow head, two eyes, eyebrows, and a mouth. The eyebrows animate by moving upward and then returning to their original position over a two-second interval. The visualization uses D3 v7 to build the SVG elements, with the mouth drawn using the `d3.arc` function. The code loads D3 from UNPKG and demonstrates importing the `select` and `arc` functions from the library.