Question: Which battle resulted as a conflict between the United States Army and the Sioux and involved a Hunkpapa Lakota holy man who was killed by Indian agency police on the Standing Rock Indian Reservation?
Sentence (from "Battle of Pease Bottom"): The main combatants were units of the 7th U.S. Cavalry under Lieutenant Colonel George Armstrong Custer, and Native Americans from the village of the Hunkpapa medicine man, Sitting Bull, many of whom would clash with Custer again approximately three years later at the Battle of the Little Big Horn in the Crow Indian Reservation.
Relevant evidence: No