query: #title: Missing inventory number
  # Complex constraint from [[Property talk:P195]]
  # Items which have [[Property:P217|inventory number&#32;<small dir="ltr">(P217)</small>]] as a qualifier of [[Property:P195|collection&#32;<small dir="ltr">(P195)</small>]], but not as a statement
  SELECT DISTINCT ?item ?collection ?inventory WHERE {
  	?item p:P195 ?collectionstatement .
      ?collectionstatement ps:P195 ?collection . 
      ?collectionstatement pq:P217 ?inventory . 
      MINUS { ?item wdt:P217 [] } . 
  }
  LIMIT 1000