query: SELECT ?item ?description ?url
    WITH {
      SELECT ?itemwith ?creator ?description WHERE {
        ?itemwith p:P195/ps:P195 wd:Q18600731 .
        ?itemwith wdt:P31 wd:Q3305213 .
        MINUS { ?itemwith wdt:P170 wd:Q4233718 } .
        ?itemwith wdt:P170 ?creator .  
        ?itemwith schema:description ?description . 
        FILTER(LANG(?description)="en")
      } 
    } AS %withcreator
    WITH {
      SELECT ?item ?creator ?description WHERE {
        ?item p:P195/ps:P195 wd:Q18600731 .
        ?item wdt:P31 wd:Q3305213 .
        MINUS { ?item wdt:P170 [] } .
        ?item schema:description ?description . 
        FILTER(LANG(?description)="en")
      } 
    } AS %withoutcreator
  WHERE {
    INCLUDE %withoutcreator
    MINUS {INCLUDE %withcreator } .
    OPTIONAL { ?item p:P4765/pq:P2699 ?url } 
    
  } 
  ORDER BY ?description
  LIMIT 1000