query: SELECT DISTINCT ?item ?howmany WHERE {
    {
      SELECT DISTINCT ?item (COUNT(DISTINCT ?statement) AS ?howmany) {
        ?person p:P39 ?statement .
        ?statement ps:P39/wdt:P279* wd:Q3406079 ; pq:P4100 ?item .
      }
      GROUP BY ?item
    }
  }
  ORDER BY DESC(?howmany)