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?
Sentence (from "M. Caldwell Butler"): Manley Caldwell Butler (June 2, 1925 – July 29, 2014) was a Virginia lawyer and politician widely admired for his integrity, bipartisanship and courage.
Relevant evidence: No