Original sentence: Elements of Ibn Fadlan's account are used in the novel Eaters of the Dead by Michael Crichton (filmed as The 13th Warrior with Antonio Banderas as Ibn Fadlan), in which the Arab ambassador is taken even further north and is involved in adventures inspired by the Old English epic Beowulf
Edited sentence: Elements of Ibn Fadlan's account are used in the novel Eaters of the Dead by Michael Crichton (filmed as The 13th Warrior with Antonio Banderas as Ibn Fadlan)(The book being far superior), in which the Arab ambassador is taken even further north and is involved in adventures inspired by the Old English epic Beowulf