Complex sentence: Plato's "Euthydemus", which features Dionysodorus and Euthydemus as prominent interlocutors, states that the brothers were born on the Aegean island of Chios before relocating as colonists to Thurii in Magna Graecia of modern-day Italy.
Split into simpler sentences: Plato's "Euthydemus" features Dionysodorus and Euthydemus as prominent interlocutors. According to the dialogue, the brothers were born on the Aegean island of Chios before relocating as colonists to Thurii in Magna Graecia of modern-day Italy.