Complex sentence: The Angereb is known for having two bridges cross it which were built either by Portuguese artisans or during the reign of Fasilides: one of four arches, and another of four arches where it joins with its parent stream.
Split into simpler sentences: The Angereb is known for having two bridges cross it which were built either by Portuguese artisans or during the reign of Fasilides. One bridge has four arches and the other also has four arches, where it joins with its parent stream.