user: Question: Which Heat has a Nation of australia, and a Rank larger than 7?
Columns: ['Rank', 'Heat', 'Cyclist', 'Nation', 'Result']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 6.0, 'Wendy Houvenaghel', 'Great Britain', '3:28.443']
SQL:

assistant: SELECT "Heat" FROM "Table" WHERE "Nation" = 'australia' AND "Rank" > 7.0;