Question: Shorpy Higginbotham was the subject of a series of photographs by an American sociologist and photographer who used his camera as a tool for what?
{'answer': 'social reform', 'supporting_facts': [['Shorpy Higginbotham', 0], ['Shorpy Higginbotham', 2], ['Lewis Hine', 0], ['Lewis Hine', 1]]}