Question: What city and county seat in South Dakota, was Crow Dog, a Brulé Lakota subchief, nephew of former principal chief Conquering Bear, and leaders that helped popularize the Ghost Dance tried and convicted for shooting and killing principal chief Chief Spotted Tail?
Sentence (from "Crow Dog"): He was the nephew of former principal chief Conquering Bear, who was killed in 1854 in an incident which would be known as the Grattan massacre.
Relevant evidence: Yes