Complex sentence: Afridies are Pethans in the tribal area of North West Pakistan and claim lineage of Genghis Khan, while Fareedies claim their lineage of Caliph Umar.
Split into simpler sentences: Afridies are Pethans in the tribal area of North West Pakistan and claim lineage of Genghis Khan. However Fareedies claim their lineage of Caliph Umar.