user: Question: What is the high grid that has a Time/Retired of +6 laps, and under 69 laps?
Columns: ['Driver', 'Constructor', 'Laps', 'Time/Retired', 'Grid']
Types: ['text', 'text', 'real', 'text', 'real']
Sample row: ['Emerson Fittipaldi', 'Lotus - Ford', 75.0, '1:48:18.7', 7.0]
SQL:

assistant: SELECT MAX("Grid") FROM "Table" WHERE "Time/Retired" = '+6 laps' AND "Laps" < 69.0;