user: Question: Who is the incumbent in the Virginia 6 district?
Columns: ['District', 'Incumbent', 'Party', 'First elected', 'Result', 'Candidates']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Virginia 4', 'William McCoy', 'Democratic-Republican', '1811', 'Re-elected', 'William McCoy (DR)']
SQL:

assistant: SELECT "Incumbent" FROM "Table" WHERE "District" = 'Virginia 6';