query: SELECT ?item (COUNT(DISTINCT ?painting) AS ?count) WHERE {
    ?painting wdt:P31 wd:Q3305213 .
    ?painting wdt:P195 ?item .
    ?painting wdt:P127 ?owner. 
    ?owner wdt:P31 wd:Q5.
    } GROUP BY ?item 
  ORDER BY DESC(?count)
  LIMIT 100