Complex sentence: The Urhobo culture is related to several cultures in the Niger-Delta-Isoko are related in language and culture, leading to the missionaries erroneously labelling the Urhobo and Isoko cultural groups as Sobo.
Split into simpler sentences: The Urhobo culture is related to several cultures in the Niger-Delta. Isoko is closely related in language and culture, leading to the missionaries erroneously labelling the Urhobo and Isoko cultural groups as Sobo.