Question: Poker Joe, was a warrior and subchief of the Nez Percé tribe of Native Americans who played a critical role during the flight of the Nez Percé during the Nez Percé War in which year, he was the chosen trail boss and guide of the Nez Percé people following the Battle of the Big Hole?
Sentence (from "Looking Glass (Native American leader)"): He, along with Chief Joseph, directed the 1877 retreat from eastern Oregon into Montana and onward toward the Canada–US border during the Nez Perce War.
Relevant evidence: No