user: Question: What is the highest rank for a 6:52.70 time and notes of SA/B?
Columns: ['Rank', 'Athlete', 'Country', 'Time', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Ondřej Synek', 'Czech Republic', '6:50.23', 'SA/B']
SQL:

assistant: SELECT MAX("Rank") FROM "Table" WHERE "Notes" = 'SA/B' AND "Time" = '6:52.70';