Question: Al Franken's 2008 United States Senate election opponent had previously been a member of which political party before becoming a Republican?
{'answer': 'Democratic-Farmer-Labor Party (DFL)', 'supporting_facts': [['United States Senate election in Minnesota, 2008', 0], ['United States Senate election in Minnesota, 2008', 1], ['Norm Coleman', 0], ['Norm Coleman', 3]]}