query: SELECT ?item (CONCAT("[[Wikidata:WikiProject sum of all paintings/Creator/",?name, "|list]]") AS ?listlink) (COUNT(?item) as ?count) WHERE {
    ?painting wdt:P31 wd:Q3305213 .  
    ?painting wdt:P170 ?item . 
    MINUS { ?painting wdt:P170 wd:Q4233718 } .
    FILTER EXISTS { ?painting wdt:P195 ?collection .
                    ?collection wdt:P17 wd:Q55 } 
    SERVICE wikibase:label {
      bd:serviceParam wikibase:language "en" .
      ?item rdfs:label ?name .
     }
  } GROUP BY ?item ?name ?listlink 
  HAVING (?count > 15)
  ORDER BY DESC(?count) 
  LIMIT 800