Complex sentence: Wolfhart Westendorf, Das alte Ägypten, 1969 He also founded a new capital city in the Delta during his reign called Pi-Ramesses; it had previously served as a summer palace during Seti I's reign.
Split into simpler sentences: Wolfhart Westendorf, Das alte Ägypten, 1969 He also founded a new capital city in the Delta during his reign, called Pi-Ramesses. It previously had served as a summer palace during Seti I's reign.