We need to fetch the mappings that are stored in Wikidata. The mappings tell us which Wikidata Property corresponds to which schema.org property. The mappings are stored in statements on the Properties in Wikidata.
“Schema.org <> wd“ property mapping fetcher (needed for pipe 2)
Oh I did this as well.
I suggest dropping SS2 as a side-step that reads and writes to a file because getting this data is a very simple SPARQL query that takes around two seconds to finish, I inject the results in pipe2 but writing it to a file and sharing it would be an overkill IMO.
What do you think?