user: Question: Which country was ranked 8 and noted as QS?
Columns: ['Rank', 'Athletes', 'Country', 'Time', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Raman Piatrushenka , Vadzim Makhneu', 'Belarus', '1:28.661', 'QF']
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Notes" = 'QS' AND "Rank" = 8.0;