VanderBot v1.4 release
The changes made in this release were made following tests that used the csv-metadata.json mapping schema to emit RDF from the source CSV tables. In order to make it possible to create all of the kinds of statements present in the Wikidata data model, the csv-metadata.json file and vb6_upload_wikidata.py script were changed to use the ps: namespace (http://www.wikidata.org/prop/statement/) properties rather than the wdt: namespace properties. This makes it possible to construct the missing wdt: statements using SPARQL CONSTRUCT. A new script materializes those triples by a CONSTRUCT query to a SPARQL endpoint whose triplestore contains the triples generated by the schema. Those materialized triples are then loaded into the triplestore, making it possible to perform queries on any graph pattern that can be used at the Wikidata Query Service SPARQL endpoint.
The first five scripts were not changed in this release.