query: SELECT ?item ?site ?criterion
  
  WHERE { 
    
    ?item wdt:P1435 wd:Q9259 . 
    ?item wdt:P2614 ?criterion_item .
          OPTIONAL {
            ?item rdfs:label ?site filter (lang(?site) ="en") .
                   }
               
          OPTIONAL {
            ?criterion_item rdfs:label ?criterion filter (lang(?criterion) ="en") .        
                   } 
  }
  
  ORDER BY (?item)