query: SELECT DISTINCT ?item ?emp ?date
  WHERE
  {
      ?item wdt:P31/wdt:P279* wd:Q4830453 .
      ?item p:P1128 ?empSt .
      ?empSt a wikibase:BestRank; ps:P1128 ?emp .
      OPTIONAL { ?empSt pq:P585 ?date } . 
      FILTER( ?item not in (wd:Q244457,wd:Q1636892,wd:Q20716,wd:Q331715,wd:Q668687,wd:Q819425,wd:Q489815,wd:Q503182))
  }
  ORDER BY DESC(?emp) 
  LIMIT 20