Complex sentence: According to the 2001 UK Census, a total of 10,671 people born in Sudan were residing in the UK, this figure ranks as fifteenth highest out of all African nations and fifth out of all Arab nations.
Split into simpler sentences: According to the 2001 UK Census, a total of 10,671 people born in Sudan were residing in the UK. This figure is the fifteenth highest migrant population in the UK of all African nations and fifth out of all Arab nations.