user: Question: What country is the athlete Ekaterina Karsten from with a rank less than 4?
Columns: ['Rank', 'Athlete', 'Country', 'Time', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Ekaterina Karsten', 'Belarus', '7:25.74', 'SA/B']
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Rank" < 4.0 AND "Athlete" = 'Ekaterina Karsten';