user: Question: what is the rank when the time is 3:12.40?
Columns: ['Rank', 'Heat', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 3.0, 'Svetlana Varganova Category:Articles with hCards', 'Soviet Union', '2:29.77']
SQL:

assistant: SELECT "Rank" FROM "Table" WHERE "Time" = '3:12.40';