Question: What is the date of death of Gar Tagu Risum's father?
Sentence (from "Gar Tagu Risum"): According to "Old Tibetan Annals", his eldest brother Gar Tsenye Dompu came into conflict with another minister Gar Mangnyen Taktsab in 685, and was killed by a river in Sumpa.
Relevant evidence: No