Write Wikidata query to provide bibliographic metadata in Dublin Core format

[Daniel-Mietchen]

This builds on

• 10

• 20

• 38

[Daniel-Mietchen]

The main idea here is to query Wikidata for the information pertaining to all the Dublin Core fields we need, and then to do the file conversion via an external script. We could, however, look into doing it all in SPARQL.

[Daniel-Mietchen]

A first version of that query now exists%20wd%3AQ30939938.%0A%20%20OPTIONAL%20%7B%20%3Fitem%20schema%3AdateModified%20%3FentryUpdatedDate%20%3B%20%7D%0A%20%20SERVICE%20wikibase%3Alabel%20%7B%20bd%3AserviceParam%20wikibase%3Alanguage%20%22en%2Cen%22.%20%7D%0A%7D%0AGROUP%20BY%20%3Fitem%20%3FitemLabel%20%3Flicense%20%3FlicenseLabel%20%3FentryUpdatedDate%0AORDER%20BY%20(%3Fitem)) in https://github.com/InvasionBiologyHypotheses/enKORE-corpus-processor/blob/main/.github/workflows/flat.yml :

SELECT DISTINCT ?item ?itemLabel ?license ?licenseLabel ?entryUpdatedDate WHERE {
  ?item wdt:P5008 wd:Q56241615;
    wdt:P275 ?license.
  ?license ((wdt:P31*)/(wdt:P279*)) wd:Q30939938.
  OPTIONAL { ?item schema:dateModified ?entryUpdatedDate ; }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en,en". }
}
GROUP BY ?item ?itemLabel ?license ?licenseLabel ?entryUpdatedDate
ORDER BY (?item)