user: Question: What was the lowest home attendance for the Southern Derby?
Columns: ['Competition', 'Record', 'Result', 'Home Matches', 'Home Attendance', 'Avg. Home Attendance']
Types: ['text', 'text', 'text', 'real', 'real', 'real']
Sample row: ['USL First Division Regular Season', '8-12-8', '8th Place', 14.0, 71735.0, 5124.0]
SQL:

assistant: SELECT MIN("Home Attendance") FROM "Table" WHERE "Competition" = 'Southern Derby';