Question: Robert Crouch Kinney was a native of Illinois that crossed what 2170 mi historic east–west, large-wheeled wagon route and emigrant trail in the United States that connected the Missouri River to valleys in Oregon?
{'answer': 'Oregon Trail', 'supporting_facts': [['Robert Crouch Kinney', 0], ['Robert Crouch Kinney', 1], ['Oregon Trail', 0]]}