query: SELECT ?item ?qid (COUNT(distinct ?sitelink) as ?count) 
  WHERE 
  { 
  ?item wdt:P17 wd:Q213 .
  BIND (xsd:integer(STRAFTER(str(?item), "Q")) AS ?qid) FILTER (?qid > 22000000) . 
  OPTIONAL { ?sitelink <http://schema.org/about> ?item }  } 
  GROUP BY ?item ?qid 
  ORDER BY DESC(?qid) 
  LIMIT 100