user: Question: what is the preliminary average score when the evening gown score is 8.774 (6)?
Columns: ['State', 'Preliminary Average', 'Interview', 'Swimsuit', 'Evening Gown', 'Semifinal Average']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['New Jersey', '8.510 (7)', '8.626 (5)', '8.712 (6)', '9.165 (3)', '8.834 (3)']
SQL:

assistant: SELECT "Preliminary Average" FROM "Table" WHERE "Evening Gown" = '8.774 (6)';