user: Question: Who are the Rowers with a Time of 6:39.49?
Columns: ['Rank', 'Rowers', 'Country', 'Time', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'David Crawshay , Scott Brennan', 'Australia', '6:21.39', 'SA/B']
SQL:

assistant: SELECT "Rowers" FROM "Table" WHERE "Time" = '6:39.49';