user: Question: Name the class for Makoto Tamada and races is 17
Columns: ['Year', 'Class', 'Team name', 'Bike', 'Riders', 'Races', 'Wins', 'Podiums', 'Poles', 'F.laps', 'Points', 'Pos.']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'real', 'real', 'real', 'real', 'text', 'text']
Sample row: [2005.0, 'MotoGP', 'Konica Minolta Honda', 'Honda RC211V', 'Makoto Tamada', '14', 0.0, 1.0, 0.0, 0.0, '91', '11th']
SQL:

assistant: SELECT "Class" FROM "Table" WHERE "Riders" = 'Makoto Tamada' AND "Races" = '17';