user: Question: What is the sum of the evening gown scores where the interview score is less than 8.77, the swimsuit score is equal to 7.8, and the average score is less than 8.2?
Columns: ['State', 'Interview', 'Swimsuit', 'Evening gown', 'Average']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Alabama', 9.16, 8.04, 8.86, 8.687]
SQL:

assistant: SELECT SUM("Evening gown") FROM "Table" WHERE "Interview" < 8.77 AND "Swimsuit" = 7.8 AND "Average" < 8.2;