query: #title: Check chapters of House of Cards
  # Complex constraint from [[Property talk:P6262]]
  # Check chapters of [[d:Q3330940|House of Cards <small>(Q3330940)</small>]]
  SELECT ?item {
      ?item wdt:P6262 ?value.
      FILTER(REGEX(?value, "^(house-of-cards:Chapter)"))
      FILTER NOT EXISTS {
        ?item wdt:P31 wd:Q21191270
      }
  }