Complex sentence: His father was Abdul Karim Amrullah, a clerical reformer of Islam in Minangkabau who was known as Haji Rasul, while his mother, Sitti Shafiyah, came from artists of Minangkabau descent.
Split into simpler sentences: His father was Abdul Karim Amrullah, a clerical reformer of Islam in Minangkabau who was known as Haji Rasul. His mother, Sitti Shafiyah, came from artists of Minangkabau descent.