user: Question: What is the sum of the grid of driver ryan hunter-reay, who has more than 24 points?
Columns: ['Driver', 'Team', 'Laps', 'Time/Retired', 'Grid', 'Points']
Types: ['text', 'text', 'real', 'text', 'real', 'real']
Sample row: ['Scott Dixon', 'Target Chip Ganassi Racing', 91.0, '1:51:05.704', 4.0, 50.0]
SQL:

assistant: SELECT SUM("Grid") FROM "Table" WHERE "Driver" = 'ryan hunter-reay' AND "Points" > 24.0;