Complex sentence: In the epic, Odysseus is instructed by a Tiresias to take an oar from his ship and to walk inland until he found a "land that knows nothing of the sea", where the oar would be mistaken for a winnowing fan.
Split into simpler sentences: In the epic, Odysseus receives a vision instructing him to take an oar from his ship and set out across the land. He was to walk until he found a "land that knows nothing of the sea", where the oar would be mistaken for a winnowing fan.