user: Question: FOR August 13 WHAT IS THE RND ?
Columns: ['Rnd', 'Race Name', 'Circuit', 'City/Location', 'Date', 'Pole position', 'Fastest lap', 'Winning driver', 'Winning team', 'Report']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Marlboro Grand Prix of Miami Presented by Toyota', 'Bicentennial Park', 'Miami, Florida', 'March 5', 'Michael Andretti', 'Scott Pruett', 'Jacques Villeneuve', 'Team Green', 'Report']
SQL:

assistant: SELECT "Rnd" FROM "Table" WHERE "Date" = 'August 13';