Simplify the following text for a Grade 14 native English-speaking person.
Original: The South Yorkshire County Council was abolished and its districts became unitary authorities ; they are the City of Sheffield , the Metropolitan Borough of Doncaster , the Metropolitan Borough of Barnsley and the Metropolitan Borough of Rotherham .
Simplified: South Yorkshire is divided into four local government districts ; they are the City of Sheffield , the Metropolitan Borough of Doncaster , the Metropolitan Borough of Barnsley and the Metropolitan Borough of Rotherham .