Complex sentence: Its metropolitan planning functions were taken over by the State Planning Authority, which has since been superseded by a succession of government departments, as of 2005 this is government department is the New South Wales Department of Infrastructure, Planning and Natural Resources.
Split into simpler sentences: Its metropolitan planning functions were taken over by the State Planning Authority, which has since been superseded by a succession of government departments. As of 2005 this government department is the New South Wales Department of Infrastructure, Planning and Natural Resources.