user: Question: what is the total number of average where evening gown is 8.988
Columns: ['State', 'Preliminaries', 'Interview', 'Swimsuit', 'Evening Gown', 'Average']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Oklahoma', '8.977', '9.488', '9.488', '9.533', '9.503']
SQL:

assistant: SELECT COUNT("Average") FROM "Table" WHERE "Evening Gown" = '8.988';