user: Question: What is the highest rank when the lane is larger than 6, and the heat is 3, and the nationality is Colombia?
Columns: ['Rank', 'Heat', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 6.0, 4.0, 'Jessicah Schipper', 'Australia', '57.58']
SQL:

assistant: SELECT MAX("Rank") FROM "Table" WHERE "Lane" > 6.0 AND "Heat" = 3.0 AND "Nationality" = 'Colombia';