user: Question: What lane did the Barbados swimmer compete in before heat 3?
Columns: ['Rank', 'Heat', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 4.0, 4.0, 'Michael Phelps', 'United States', '4:07.82']
SQL:

assistant: SELECT "Lane" FROM "Table" WHERE "Heat" < 3.0 AND "Nationality" = 'Barbados';