Complex sentence: The Gambila is an important river for the inhabitants of the Dawar valley, as it serves to irrigate a large area of land that it runs through, particularly that belonging to the Takhti khel Marwats, Bakkakhel Wazirs, and Miri and Barakzai Bannuchis.
Split into simpler sentences: The Gambila is an important river for the inhabitants of the Dawar valley, as it serves to irrigate a large area of land that it runs through. Particularly that belonging to the Takhti khel Marwats, Bakkakhel Wazirs, and Miri and Barakzai Bannuchis.