Question: What is the name of the battle fought in Montana, August 9–10, 1877, between the U.S. Army and the Nez Perce tribe of Native Americans during which Poker Joe served as trail boss and guide to the Nez Percé?
{'answer': 'Battle of the Big Hole', 'supporting_facts': [['Poker Joe', 0], ['Poker Joe', 5], ['Battle of the Big Hole', 0]]}