user: Question: How many touchdowns were there when Heston was in play?
Columns: ['Player', 'Position', 'Starter', 'Touchdowns', 'Extra points', 'Field goals', 'Points']
Types: ['text', 'text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['Clark', 'Right halfback', 'Yes', 4.0, 0.0, 0.0, 20.0]
SQL:

assistant: SELECT SUM("Touchdowns") FROM "Table" WHERE "Player" = 'Heston';