Question: Emperor Go-Toba was what head of the Imperial Family in Japan?
Sentence (from "Emperor Go-Toba"): Emperor Go-Toba (後鳥羽天皇 , Go-Toba-tennō ) (August 6, 1180 – March 28, 1239) was the 82nd emperor of Japan, according to the traditional order of succession.
Relevant evidence: Yes