Complex sentence: Zangbeto are men in a costume that resembles a haystack but they fall into a trance which enables their bodies according to tradition to be inhabited by spirits who possess special knowledge of the actions of people.
Split into simpler sentences: Zangbeto are men in a costume that resembles a haystack. They are able to fall into a trance which, according to tradition, enables their bodies to be inhabited by spirits who possess special knowledge of the actions of people.