query: SELECT ?cid ?cidLabel (COUNT(*) AS ?count) WHERE {
    ?pid wdt:P19 ?pob .
    ?pob wdt:P17 wd:Q408 .
    ?pid wdt:P21 ?cid .
    
     SERVICE wikibase:label {
      bd:serviceParam wikibase:language "en" .
     }
  
  }
  GROUP BY ?cid ?cidLabel
  ORDER BY DESC(?count) ?cidLabel
  LIMIT 500