This example displays a line chart of US cancer cases from 2009 to 2022, plotting student names against student marks as a proxy for years and case counts. The visualization uses D3 v5 with SVG rendering, employing `d3.scaleTime` and `d3.scaleLinear` for axes, `d3.axisLeft` and `d3.axisBottom` for ticks, and a `d3.line` generator for the path. Data is loaded via `d3.csv` from external GitHub gist URLs, with parsing of dates and numeric values before rendering.