user: Question: What is the lane total when rank is 2?
Columns: ['Rank', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 5.0, 'Natalie Coughlin', 'United States', '59.43']
SQL:

assistant: SELECT SUM("Lane") FROM "Table" WHERE "Rank" = 2.0;