Question: George A. Schilling, was a prominent American union leader and Georgist in the late nineteenth century, he made his mark in the Chicago labor movement as a member of the cooper's union and a leader of which was the largest and one of the most important American labor organizations of the 1880s?
{'answer': 'Knights of Labor (K of L)', 'supporting_facts': [['George A. Schilling', 3], ['Knights of Labor', 0]]}