user: Question: Name the least lane for kasey giteau and rank less than 18
Columns: ['Rank', 'Heat', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 3.0, 4.0, 'Brooke Bennett', 'United States', '4:07.57']
SQL:

assistant: SELECT MIN("Lane") FROM "Table" WHERE "Name" = 'kasey giteau' AND "Rank" < 18.0;