user: ### NOW ANSWER:
Question: What's brazil's rank when it has notes of r?
Columns: ['Rank', 'Rowers', 'Country', 'Time', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Kirsten van der Kolk , Marit van Eupen', 'Netherlands', '6:50.90', 'SA/B']
SQL:

assistant: SELECT COUNT("Rank") FROM "Table" WHERE "Notes" = 'r' AND "Country" = 'brazil';