user: Question: Who was the 4 lane person from Canada?
Columns: ['Rank', 'Heat', 'Lane', 'Name', 'Nationality', 'Time']
Types: ['real', 'real', 'real', 'text', 'text', 'text']
Sample row: [1.0, 4.0, 3.0, 'Alessio Boggiatto', 'Italy', '4:14.26']
SQL:

assistant: SELECT "Heat" FROM "Table" WHERE "Lane" = 4.0 AND "Nationality" = 'Canada';