query: SELECT ?item ?article
  WHERE
  {
  	?article schema:about ?item ; schema:inLanguage "zh" .
    	?item wdt:P31 wd:Q5 .
  	OPTIONAL { ?item rdfs:label ?labelen . FILTER(lang(?labelen)="en")  } FILTER (!BOUND(?labelen))
  }
  LIMIT 10000