query: SELECT DISTINCT ?item ?count
  WITH {
    SELECT ?item (COUNT(DISTINCT ?statement) AS ?count) WHERE {
      SERVICE bd:sample { ?item wdt:P275 [] . bd:serviceParam bd:sample.limit 100000 }     
      ?citing wdt:P2860 ?item . 
      ?statement prov:wasDerivedFrom/pr:P248 ?item .
    }
    GROUP BY ?item
    LIMIT 10000
  }
  AS %items
  WHERE { 
    SELECT ?item ?count WHERE {
      INCLUDE %items
              ?item wdt:P50 ?author ;
              wdt:P932 [] ;
              wdt:P921 [].
      ?author wdt:P21 wd:Q6581072 ;
              wdt:P496 ?orcid .
  
    } 
    GROUP BY ?item ?count
  }
  ORDER BY DESC(?count)