Question: M. Caldwell Butler is a native of an independent city in Virginia, that is located in the Roanoke Valley, and had what population in the 2010 census?
{'answer': '97,032', 'supporting_facts': [['M. Caldwell Butler', 1], ['Roanoke, Virginia', 0], ['Roanoke, Virginia', 1], ['Roanoke, Virginia', 2]]}