query: #ORCID iD holders who have an article on German Wikipedia
  SELECT ?sitelink ?itemLabel ?orcid WHERE {
   ?item wdt:P31 wd:Q5.
   ?item wdt:P496 ?orcid.
   ?sitelink schema:isPartOf <https://de.wikipedia.org/>;
   schema:about ?item;
   SERVICE wikibase:label { bd:serviceParam wikibase:language "en" } .
  } ORDER BY ?itemLabel