query: #title: RKDartists photographers without link
  # Complex constraint from [[Property talk:P3269]]
  # People with [[Property:P650|RKDartists ID&#32;<small dir="ltr">(P650)</small>]] and [[Property:P106|occupation&#32;<small dir="ltr">(P106)</small>]] (or subclass) [[d:Q33231|photographer <small>(Q33231)</small>]], but no [[Property:P3269|Fotografen.nl ID&#32;<small dir="ltr">(P3269)</small>]]
  SELECT DISTINCT ?item WHERE { 
    ?item wdt:P650 [] .
    ?item wdt:P31 wd:Q5.
    ?item  wdt:P106/wdt:P279* wd:Q33231 .                  
    MINUS {?item wdt:P3269 [] .
          }                   
  }