query-72c9757053f9bcf2a1297adb2dc07ba5

Paintings linked to RKDimagesFirst of all, you can count how many we have today:

Use at

https://query.wikidata.org/sparql

PREFIX wdt: <http://www.wikidata.org/prop/direct/>
PREFIX wd: <http://www.wikidata.org/entity/>
SELECT (COUNT(DISTINCT ?item) AS ?count) WHERE {
  ?item wdt:P31 wd:Q3305213;
    wdt:P350 ?rkd.
  }

Query found at

https://www.wikidata.org/wiki/Wikidata:WikiProject_RKD

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v3("?count") v1("?item"):::projected v2("?rkd") c2(["wd:Q3305213"]):::iri v1 --"wdt:P31"--> c2 v1 --"wdt:P350"--> v2 bind1[/"count(?item)"/] v1 --o bind1 bind1 --as--o v3