Complex sentence: The Port of Szczecin (in Polish generally "Port Szczecin") is a Polish seaport and deep water harbour in Szczecin, Poland, located at the Oder and Regalica rivers in the Lower Oder Valley, off the Szczecin Lagoon.
Split into simpler sentences: The Port of Szczecin (in Polish generally "Port Szczecin") is a Polish seaport and deep water harbour in Szczecin, Poland. It is located at the Oder and Regalica rivers in the Lower Oder Valley, off the Szczecin Lagoon.