query: SELECT DISTINCT ?item ?status ?la WHERE 
  { ?item wdt:P31/wdt:P279* wd:Q16917; wdt:P17 wd:Q881
  OPTIONAL { ?item p:P31/ps:P31 wd:Q64578911 . BIND(wd:Q64578911 as ?status1) } BIND(COALESCE(?status1,wd:Q64624840) as ?status)
  OPTIONAL { ?item rdfs:label ?la . FILTER(lang(?la)="vi") }
  }