Complex sentence: In another version of the myth, as depicted on the interior frieze of the Pergamon Altar, Telephus is married to the amazon Hiera, who brings a force of amazons to the aid of Pergamum, but is herself killed in the battle.
Split into simpler sentences: In another version of the myth, as depicted on the interior frieze of the Pergamon Altar, Telephos was married to the Amazon Hiera. She brought a force of Amazons to the aid of Pergamum, but was herself killed in the battle.