query: #title: Possibly malformed entries
  # Complex constraint from [[Property talk:P4012]]
  # check if family name and given names aren't inverted
  SELECT ?item ?l
  WHERE
  {
    ?item wdt:P4012 [] ; rdfs:label ?l . 
    FILTER( lang(?l) = "en" && REGEX( ?l, "^.+ [A-Z][A-Z]$")  )
  }
  LIMIT 100