Simplify the following text for a Grade 4 native English-speaking person.
Original: Significant employers in Southampton include the University of Southampton , Southampton Airport , the Ford Transit factory , Ordnance Survey , the BBC through Radio Solent and South Today , the NHS and one of the largest commercial ports in Europe . The city represents the core of the Greater Southampton region , and the city itself has an estimated population of 234,600 ( MYE 2008 ) .
Simplified: Southampton is the largest city on the south coast .