Complex sentence: Awo-omamma people belong to Oru (river side dwellers) of Western Igbo, also found along the Niger Igbo region of Aboh and Illah.
Split into simpler sentences: Awo-omamma people belong to Oru-subgroup of Western Igbo people. They are part of riverside dwellers (Oru) also found along the Niger Igbo region of Aboh and Illah.