"Give me a JSON document when the keys are countries in the G20 and the values are their GDP for the year 2020"
With the Wolfram plug-in, this works and provides good data! It stops three short of the goal probably due to rate limiting, but I think you can get the point: https://chat.openai.com/share/9d6695a9-5ba8-44d8-9ec8-11fcba...
This same kind of query works with any reasonable structured data format.