Complex sentence: Prince of Songkla University is the oldest and largest university in Southern Thailand, whose main campus is situated near Hat Yai downtown (the campus area covers'Hat Yai' city and'Kho Hong' town, part of Greater Hat Yai).
Split into simpler sentences: Prince of Songkla University is the oldest and largest university in southern Thailand. The main campus is near Hat Yai downtown (the campus area covers'Hat Yai' city and'Kho Hong' town, part of greater Hat Yai).