user: Question: what is the sum of the b score when the a score is 6.6 and the total is 15.6?
Columns: ['Position', 'Gymnast', 'A Score', 'B Score', 'Total']
Types: ['text', 'text', 'real', 'real', 'real']
Sample row: ['1st', 'Diego Hypólito ( BRA )', 6.6, 9.35, 15.95]
SQL:

assistant: SELECT SUM("B Score") FROM "Table" WHERE "A Score" = 6.6 AND "Total" = 15.6;