query: SELECT ?item (COUNT(DISTINCT(?painting)) AS ?count) WHERE {
    ?item wdt:P106 wd:Q1028181. 
    ?painting wdt:P31 wd:Q3305213 .
    ?painting wdt:P528 ?catalogstatement .
    ?painting wdt:P170 ?item . 
    } GROUP BY ?item
  ORDER BY DESC(?count)
  LIMIT 200