Quality, accuracy of data is more important than Quantity.
AI does not seem to know the difference between fact and fiction. AI seems to regard Cabot Cove ME and Spart MS as equal in consideration to other cities in those states. But, of course, those cities are fictional.
AI places GA cities in the wrong county and the county on the wrong side of the state.
AI has many errors that are correctable. But the humans who define the algorithms for AI consumption of data seem to be much more interested in Quantity than Quality.
GiGO Garbage In Garbage Out.
It would end up being a very long “book”, but I can imagine an AI repository that contains short, simple verified factual statements:
Boston is a city in Massachusetts.
Cabot Cove is a fictional city which is stated to be in Maine in the “Murder, She Wrote” series.
etc.
You could employ humans to verify a collection of these short statements and make sure that nothing goes into the repository unless it has been cleared by human.
Make that repository the reference of first resort for any AI tool and it would begin with a factual foundation (better than starting with reddit or wikipedia).