query: SELECT ?item ?itemLabel ?population ?normalizedarea (ROUND(?hustota*1000)/1000 AS ?hustota_rounded)
  WHERE
  {
      ?item p:P31 ?neco .
      ?neco ps:P31 wd:Q74728036 .
      ?item wdt:P17 wd:Q213 . 
      MINUS { ?neco pq:P582 ?dummy0 }
      OPTIONAL {
      ?item p:P2046 [ psn:P2046 [ wikibase:quantityAmount ?normalizedSuperficie; wikibase:quantityUnit ?normalizedUnit ] ] .
      ?item p:P2046 [ psv:P2046 [ wikibase:quantityAmount ?originalSuperficie; wikibase:quantityUnit ?originalUnit ] ] .
      ?item wdt:P1082 ?population. } . 
      BIND(?normalizedSuperficie/1000000 AS ?normalizedarea) .
      BIND(?population / ?normalizedarea AS ?hustota ) .
      ?item rdfs:label ?itemlabel . FILTER(LANG(?itemlabel)='cs')
      BIND(xsd:integer(REPLACE(?itemlabel,'\\D','')) AS ?numeric_part)
      SERVICE wikibase:label { bd:serviceParam wikibase:language "cs" }
  }
  ORDER BY ?numeric_part