query: SELECT ?item (COUNT(DISTINCT ?backlink) AS ?cnt) WITH {
    SELECT ?item WHERE { ?item wikibase:statements 0 }
  } AS %subquery WHERE {
    INCLUDE %subquery .
    ?item wikibase:sitelinks 0 .
    OPTIONAL { ?backlink ?any ?item }
  } GROUP BY ?item HAVING (?cnt >= 3) ORDER BY DESC(?cnt)