For the Ancient Egyptians, Aswan was the place where the yearly flood of the Nile began.
Aswan was the site where Ancient Egyptians could witness the start of the annual flooding of the Nile.
mnli hypothesis: Aswan was the site where Ancient Egyptians could witness the start of the annual flooding of the Nile. premise: For the Ancient Egyptians, Aswan was the place where the yearly flood of the Nile began.