user: Question: what is the country for Zhang Xiuyun?
Columns: ['Rank', 'Athlete', 'Country', 'Time', 'Notes']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'Rumyana Neykova', 'Bulgaria', '7:22.37', 'SA/B']
SQL:

assistant: SELECT "Country" FROM "Table" WHERE "Athlete" = 'Zhang Xiuyun';