query: SELECT DISTINCT ?item ?object ?book
    WITH {
    SELECT ?item WHERE {
    ?item wdt:P31 wd:Q5.
    ?item wdt:P6379 wd:Q17153751.
    FILTER NOT EXISTS {?item wdt:P7763 []}.  
    } 
    } AS %results
    WHERE {
      INCLUDE %results.
    {?object wdt:P170 ?item.}#maker
    UNION
    {?book wdt:P50 ?item.}#auteur
  }