Complex sentence: Qilla Saifullah became a district on 14th December 1988 and is named after Saifullah Khan, who was from the Mirdadzai (Khodadzai) tribe of Kakar Sunzerkhail.
Split into simpler sentences: Qilla Saifullah became a district on 14th December 1988. This District is named after Saifullah Khan, who was from the Mirdadzai (Khodadzai) tribe of Kakar Sunzerkhail.