query: #title: English words before English existed
  # Complex constraint from [[Property talk:P3909]]
  # Person with English last words who died before the year 400
  SELECT ?item WHERE {
      ?item wdt:P3909 ?words; wdt:P569 ?db.
      FILTER ( LANG( ?words ) = 'en' ) 
      FILTER ( YEAR( ?db ) < 400 )
    }