user: Question: What is the total heat ranked higher than 7?
Columns: ['Rank', 'Heat', 'Cyclist', 'Nation', 'Result']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 3.0, 'Rebecca Romero', 'Great Britain', '3:27.703']
SQL:

assistant: SELECT SUM("Heat") FROM "Table" WHERE "Rank" > 7.0;