query: SELECT ?item (COUNT(DISTINCT ?painting) AS ?count) WHERE {
    ?painting wdt:P31 wd:Q3305213 .
    ?painting wdt:P195 ?item .
    ?article schema:about ?painting .
    ?article schema:isPartOf ?sitelink . 
    FILTER REGEX(STR(?sitelink), ".+wikipedia.org.+") .
    } GROUP BY ?item
  ORDER BY DESC(?count)
  LIMIT 250