user: Question: How many times did District of Columbia receive a score for evening gown?
Columns: ['State', 'Preliminaries', 'Interview', 'Swimsuit', 'Evening Gown', 'Average']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Mississippi', '8.852', '9.123', '9.366', '9.343', '9.277']
SQL:

assistant: SELECT COUNT("Evening Gown") FROM "Table" WHERE "State" = 'District of Columbia';