> Using the simple facts housed in Wikidata, you will be able to write functions that make calculations, provide a person’s age, estimate population densities, and more, and integrate the results into Wikipedia.
Wikidata cannot express the "semantic" content of average encyclopedic text, which is an express goal of Wikifunctions. So they will have to expand the data model quite a bit compared to what Wikidata has today. (This can be done quite cleanly though, since the whole point of RDF is to be able to express general graphs, and this aspect has been made even stronger with RDF* which aligns fairly well with the "frame" semantics Wikifunctions plans to use for the above purpose.)
Wikifunctions are arguably the prerequisite to making that effort, since even if you extended Wikidata with more semantic connections, you couldn't do anything with them.
This is a large part of why Abstract Wikipedia's goal is NLG, and almost all of the initial Wikifunctions facilitate NLG.
Yes but there are significant restrictions as to what can be expressed there - it's limited to assertions of the form 'well-known entity X has pre-defined property P with value Y (or "some value" or "no value"), with one further layer of "qualifiers"'. RDF itself is fully compositional, and RDF* extends that compositionality even further, providing a standard means to reify arbitrary RDF statements and make complex assertions about them.
And it has full data dumps and query service (https://query.wikidata.org/) so if you wanted to use it in any LLM project or as side service, there's absolutely no problem with that.
