user: Question: What is the lowest rank that Spain got?
Columns: ['Rank', 'Heat', 'Cyclist', 'Nation', 'Result']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 4.0, 'Bradley Wiggins', 'Great Britain', '4:16.571']
SQL:

assistant: SELECT MIN("Rank") FROM "Table" WHERE "Nation" = 'Spain';