Complex sentence: Alhough fragmentary, much of the Gigantomachy frieze has been restored, and the names and the general position of most of the gods and goddesses, and many of the Giants, have been more or less established.
Split into simpler sentences: Alhough fragmentary, much of the Gigantomachy frieze has been restored. The names and the general position of most of the gods and goddesses, and many of the Giants, have been more or less established.