user: Question: What is the Time when there are 18 laps, grid larger than 15, and Rider of Russell Holland?
Columns: ['Rider', 'Bike', 'Laps', 'Time', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Troy Bayliss', 'Ducati 1098 F08', 18.0, '36:11.468', 7.0]
SQL:

assistant: SELECT "Time" FROM "Table" WHERE "Laps" = 18.0 AND "Grid" > 15.0 AND "Rider" = 'Russell Holland';