Complex sentence: The Nottingham Built-up Area or Nottingham Urban Area is an area of land defined by the Office for National Statistics, consisting of the city of Nottingham and the adjoining urban areas of Nottinghamshire and Derbyshire, in the East Midlands of England.
Split into simpler sentences: The Nottingham Built-up Area, or Nottingham Urban Area, is an area of land defined by the Office for National Statistics. It is the city of Nottingham and the adjoining urban areas of Nottinghamshire and Derbyshire, in the East Midlands of England.