Question: Edwin F. Davis, of Corning, Steuben County, New York was the first "state electrician" (executioner) for the State of New York, Davis performed 240 executions between 1890 and 1914, including the first person to be executed by electric chair, including which convicted murderer, and the first person in the world to be legally executed using an electric chair?
{'answer': 'William Francis Kemmler', 'supporting_facts': [['Edwin Davis (executioner)', 2], ['William Kemmler', 0]]}