Complex sentence: The captured Magyars were either executed, or sent back to their ruling prince, Taksony, missing their ears and noses; on their return the Hungarian dukes Lél, Bulcsú and Sur, who were not Árpáds, were executed.
Split into simpler sentences: The captured Magyars were either executed, or sent back to their ruling prince, Taksony, missing their ears and noses. On their return, the Hungarian dukes Lél, Bulcsú and Sur, who were not Árpáds, were executed.