Question: What is the home of the core group that is part of the core artists of Hot Country and is on the Southern Ground Artist's label?  
Sentence (from "Zac Brown Band"): The lineup consists of Zachry Alexander "Zac" Brown (born July 31, 1978) (lead vocals, guitar), Jimmy De Martini (born August 3, 1976) (fiddle, vocals), John Driskell Hopkins (born May 3, 1971) (bass guitar, guitar, baritone guitar, banjo, ukulele, upright bass, vocals), Coy Bowles (born February 20, 1979) (guitar, keyboards), Chris Fryar (born November 22, 1970) (drums), Clay Cook (born April 20, 1978) (guitar, keyboards, mandolin, steel guitar, vocals), Matt Mangano (born May 12, 1976) (bass guitar), and Daniel de los Reyes (born July 18, 1962) (percussion).
Relevant evidence: No