query: SELECT ?item 
  ?itemLabel 
  WITH {
    SELECT DISTINCT ?item WHERE {
    ?item wdt:P31 wd:Q13442814 ;
          wdt:P50 ?author.
    FILTER NOT EXISTS { ?item wdt:P921 ?topic ; wdt:P2093 [] .}
    }
    LIMIT 10000
  } AS %papers
  WHERE {
    INCLUDE %papers .
    		?item rdfs:label ?itemLabel.
  		FILTER(LANG(?itemLabel) = "en").
   }
  LIMIT 10000