Complex sentence: Bantu Stephen Biko was born on 18 December 1946, the third child of Mzingayi Mathew Biko and Alice'Mamcete' Biko.
Split into simpler sentences: Bantu Stephen Biko was born on 18 December 1946. He was the third child of Mzingayi Mathew and Alice'Mamcete' Biko.