Complex sentence: Dr. Ona hails from Pagadian City, Zamboanga del Sur and the son of a doctor who was the first provincial health officer of Zamboanga del Sur, and a periculture nurse.
Split into simpler sentences: Dr. Ona hails from Pagadian City, Zamboanga del Sur. He is the son of the first Provincial Health Officer of Zamboanga del Sur and a periculture nurse.