query: select ?item ?itemLabel ?cp where {
  ?item p:P669 ?street .
  ?street ps:P669 wd:Q43051749 .
  OPTIONAL {?street pq:P670 ?streetno } . 
  SERVICE wikibase:label { bd:serviceParam wikibase:language "cs,en". }
  } 
  ORDER BY xsd:integer(?streetno)