Maybe the ability to parse a typical documentation site, like https://react.dev/reference/react or https://react.dev/reference/react, and make a table of functions + 1-line descriptions + examples, with a link to the full page?

Or the ability to generate Census tables from a natural language prompt? Like "Real income vs housing costs for San Francisco, 1980 to 2024". (You could graph it too once you have the table, but that's secondary to just being able to fetch the right data and format it as a table from natural language input.)