Question: Who is the paternal grandfather of Na'Akueto La'Ab?
Sentence (from "Na'akueto La'ab"): He argues that this tradition masks a brief period when Na'akueto La'ab "was no doubt a rallying point for disaffected elements in the country, and although kept under close watch managed to usurp the throne for a brief period until Yetbarak managed to take his father's throne."
Relevant evidence: No