Complex sentence: The river originates near the border, in the area east of Newtown and south of the village Snead, flows west, forming part of the border between Wales and England to the west of Snead, before flowing north-west into Wales and by Churchstoke.
Split into simpler sentences: The river originates near the border, in the area east of Newtown and south of the village Snead. Flows west, forming part of the border between Wales and England to the west of Snead, before flowing north-west into Wales and by Churchstoke.