query: #title: Check 419.x
  # Complex constraint from [[Property talk:P1036]]
  #
  SELECT ?item WHERE {
    ?item wdt:P1036 ?DDC.
    FILTER( REGEX( STR( ?DDC ), "^(419.+)$" ))
    FILTER NOT EXISTS { ?item wdt:P31 wd:Q34228}
  }