query: #title: Check postal codes in the Philippines
  # Complex constraint from [[Property talk:P281]]
  #
  SELECT DISTINCT ?item ?zipCode
  WHERE {
    ?item wdt:P17 wd:Q928; wdt:P281 ?zipCode .
    FILTER(REGEX(STR(?zipCode), "^\\d{4}(–\\d{4})?$") = false)
  }
  ORDER BY ?item